Doggie asking Sky if he would follow Syd if he made her the leader could be seen as a subtle nod to Dekaranger, where in the first episode, Umeko/DekaPink believed she was the new leader.
Doggie's question becomes more poignant when one realizes, following a certain reveal, that he already HAS a female Red Ranger leading his most capable squad. If Sky was that dismissive about the prospect of having a woman as a leader, imagine the friction that would come about if he ever crossed paths with Charlie off-duty.
Kat's Morpher during "Katastrophe"; it seems really pointless to give a ranger a morpher that only lasts an hour. However, a morpher like this can be used to either deputize a ranger for a short time, or to give a cadet hands on experience. That and it probably doesn't have an appropriate charger like the other morphers.
The Earth Branch was made public in the year 2015, more than likely due to the Warstar, the Armada and Sledge's forces attacking in such rapid succession.
Probably not Sledge, but with the Galaxy Warriors ship did hang out for a while and after it's destruction, who knows how many of it audience fled to start a new life on Earth.
One episode, "Zapped" has mind control wear off of Syd when she morphs. So (comics aside) we know the A-Squad was Not Brainwashed the moment we see them in morph.
Though it was an obvious case of Prop Recycling, it does add a lot of Always Someone Better subtext that the A-Squad suits have the helmets of the series most long term fans consider to be the best. We also see Sky's father, who has been praised as one of the best during his service, in a different outfit than that in an outfit that fans also consider to be just as good.
There's also a bit of twisted irony in that the A-Squad's suits consist of props from the same series that's well known for its own set of evil rangers.
As many probably noticed, S.W.A.T. Mode makes the B-Squad Rangers look more like A-Squad in weapons and look (the extra body armor and the rifle). It's also noted that S.W.A.T. Mode was created during the series, after the A-Squad team was established. It is possible that the A-Squad were the S.P.D. equivalent of real life SWAT teams where the A-Squad would come in to handle situations that had escalated. The S.W.A.T. Mode was created in response to the escalated situations since, because there is no higher team to call on, the B-Squad would have to access the higher tech themselves.
A-Squad having a completely different outfit and power set than B-Squad makes perfect sense when you remember one fact about Power Rangers: more than one of the same power set can't exist at any one time. Therefore, there are likely multiple different sets of Ranger Powers for S.P.D. for use by different squads, the one we see is merely the set of the team we follow. Another in-universe justification also works for why the two teams have different uniforms outside of morph. B-Squad interacts with the public on a more regular basis, so their uniforms as officers and as Rangers are designed clean and crisp to project a good image. A-Squad, on the other hand, are only called into combat situations, and thus their officer clothing is a practical jumpsuit while their Ranger gear is in heavily armored and outfitted with all manner of bells and whistles.
B-Squad's Heroic Second Wind makes a lot more sense when you think about that all their previous training throughout the series was in direct response to A-Squad's disappearance and S.P.D wanted to make sure the new Ranger team were ready for anything, unlike the latter group. So, it was already Laser-Guided Karma for A-Squad the moment they turned on S.P.D. Because of those experiences and being given the right equipment, B-Squad can easily mop the floor against their rogue predecessors.
Of the trio of Sky, Syd and Bridge, Bridge is the only one who isn't initially hostile towards Jack and Z and has the least amount of conflicts with them. In that sense, one could say that he serves as the "Bridge" between the two groups.
The show justifies itself with its Spared By Adaptation difference to Dekaranger, along with being the only Power Rangers series where the heroes don't destroy every villain they fight. Power Rangers tends to make itself more kid-friendly than Super Sentai by removing most of the mature and violent themes of the latter. In Dekaranger's case, these themes were the probable cause that resulted in the Alienizers being deleted. In S.P.D, the criminals never did anything heinous enough (save for occasional mentions of Offstage Villainy) to deserve being destroyed.
It's already in canon from Power Rangers Turbo that morphing can change your body, seeing as Justin grew from child to adult. Changing Cruger's face is far less jarring a transformation than that. It probably is possible.
Why does only Cruger train only Jack in sword fighting? Jack's firearms consist of two blasters as opposed to everyone else whose gun can turn into a sword.
Also consider that the Battlizer's primary weapon is a sword. Cruger could have been planning the Battlizer for Jack for a while.
The morphers judgement mode having the Rangers play Judge, Jury, and Executioner was given a weak Hand Wave by saying the scanners on the morphers were infallible... but the biological makeup of the various alien races they fought against was so different, it would have taken one small programming error for an innocent alien to be declared guilty, or vice-versa. The only thing mitigating this from turning the Rangers into an army of Judge Dredds is that they only digitize the criminals into cards as opposed to executing them, so in case there's an innocent declared guilty, they can at least digitize him and detain them for further questioning.
What exactly happened that made A-Squad side with Gruumm? In the comics they were Brainwashed and Crazy, but what about the show? Were they really defectors of their own free will and thus deserving of their punishment or brainwashed and therefore unwittingly unjustly arrested?
The idea of the A-Squad's Face–Heel Turn. Even in the first episode it's mentioned that something's off about them, which was well before Emperor Gruumm arrives. This indicates the team was already corrupt before his arrival.
