Where does SSJ even come from? Saiajin still ends in an "n", so it should still be SS(2,3,G,ect). To me it reeks of that 90s "Japanese words are so cool" phase.
As far as Goku and Vegeta being made stronger when they weren't, I maintain that Vegeta aping Gohan's gimmick and getting inexplicably more powerful than Goku/Gohan/Majin Buu when Bills slapped his wife was the most blatant example, though the fact Vegeta was deemed "righteous" in order for Super Saiyan god to exist in the first place is also pretty suspect.
As for rotating the cast? That was pretty easy with Uub from the last episode and maybe Pan too. Simple handwave: Uub had pure/kid Buu's power from birth, became exponentially more powerful as he grew and is still growing. Goku gets old/suffers and debilitating injury/can't be in two places at once, Uub becomes the focus character for awhile. Gohan's elder Kai power up is inadvertently transferred to his much more competitive much less sedentary daughter, even easier hand wave. Younger age means she hasn't completely overtaken Uub yet.
Majin Buu's been training the entire time, so have Goten and Trunks, who can presumably still fusion dance. No hand waves even required there. Vegeta already accepted that Goku was simply better than him back during the Kid Buu fight, so him falling behind wouldn't be so surprising. Uub, Pan, Goten, Trunks(+Gotenks) and maybe Goku still sticks around? Honestly, Dragon Ball was about Goku from the very beginning, just phasing him out seems weird but if you decided to do that you'd still have a strong core four.
Even with Goku being seemingly stronger than Buu was without transforming at all and two transformations more powerful than SS-3. Even with Vegeta not taking his back seat to Goten, Trunks, Majin Buu and Gohan/Pan, Goku and Vegeta are still outclassed by Bills and Whis. It still won't be too hard to turn over a new cast if they really want to, it's just a shame these developments retroactively make Uub's big reveal underwhelming. Even if some plot development(like say, merging with Majin Buu) does let him catchup, it's hard to take Goku's suggestion that he stood a chance of winning the Budokai seriously.
edited 23rd May '15 3:29:07 PM by IndirectActiveTransport
Buldogue's lawyerFirst?
SSJ comes from the words 'Super Saiya-jin'.
Second?
Weaboo jokes. Classy.
Third?
Some of us do not live in the USA, where the translation chosen was 'Super Saiyan'. Some of us live in countries where the Latin dub chose not to translate the term, as it was the name of a species, and instead called them 'Saiyajin'. True, we get lots of morons saying 'shashashin', but then again, morons are morons.
edited 23rd May '15 3:37:58 PM by IAmNotCreativeEnough
himitsu keisatsu seifu chokuzoku kokka hoanbu na no da himitsu keisatsu yami ni magireru supai katsudou torishimariSupaa Saiya-Jin. The -jin is technically its own separate word. I use it only because SS1, SS2 and SS3 looks stupid to me. Of course, the Japanese abbreviate as "SS" as evident by Super Saiyan God SS but eh.
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........Beautiful.
That was genuinely hilarious. Not-Ler knows his ideal when he sees it.
And clearly, the writers of Fusion Reborn love irony.
One Strip! One Strip!Probably. That's not technically inaccurate, after all.
Let the joy of love give you an answer! Check out my book!Close, but no. じん is pronounced with a long "I" like in "dean" while "djinn" is pronounced with a short "I" like in "shin."
edited 23rd May '15 8:06:40 PM by Zelenal
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For the record, if you see an "I" in Japanese, unless it comes after an "E", it's always pronounced the same way.
I think that's the Big Green Dub. It usually is.

Come up with some way of strengthenng humans that doesn't work for Saiyans because *handwave*.
I have a message from another time...