These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Base Breaker: LOLBAT is in the lead, although a lot of Kurtz twists and addons have the same element. Skull's diminuitive, ambitious cousin, and Scratch Fury and many others all have their detractors.
Ensemble Darkhorse: Scott's Dad is probably the darkest horse to become as popular as he has with the fanbase, but Scott does try not to overuse him.
The Scrappy - Skull's cousin Schecky. Lampshaded when he reappeared for Thanksgiving 2012, with a cartoony "Aww Hell! Shecky's Back!" title card.
Mary Sue - Marcy, who bests Francis in everything, is a talented artist, and whose only flaw is jealousy, once, when Francis flirts with a cosplayer. Also, she easily gets into an art school with two unfunny comic strips, while Francis gets teased for wanting to go to gaming college, then mocked and derided for 'not growing up.'
They Wasted a Perfectly Good Plot - Several of Kurtz' recent (well, last-couple-of-years kind of recent) plots build up an impressive and possibly even grandiose story arc, only to fizzle out on a short anticlimax. Take for example Robbie's brewing company, Brent's deal with the devil, or the developer that tried to bribe them into giving a good review of his game, all plots which could have been fantastic if not for the fact that Kurtz apparently chickened out right when he got to the hook.
Not to mention the possibility that Francis and Marcy had been drugged by Glamrock Games so they wouldn't spoil the (possibly) pre-arranged outcome of the gaming tournament in Vegas