Ok lets look at responds:
Drake is bit too good character. Althou its really just 3 moves. Barrel, AK-47 and gunslam and level 3. Nerfing atleast one of those would be more balanced.
For Big Daddy its kinda hard to come up with buffs. Technically he is good but you can dodge him quite easily. If we would make Big Daddy faster it would kinda ruin that character.
Mr. Zurkon i believe needs buff atleast some what. It barely even hits. Maybe his shot would be like Jak's Needle lasers and have homing ability?
Evil Cole is indeed a troll. That stupid level 1 set is SO EASY. Its also the only thing Evil Cole users do. Ruining cheap characters should happen more often. They did it with Sackboy, next one should be Evil Cole. Nerf that Gigaton punch! >
Sackboy got nerfed so hard which is sad because i cant see them doing the same to actually broken characters.
(Althought 750AP cost for level 3 is probably the only good nerf i can agree)( Its also hard to imagine them to buff Jam session x( )
Kratos and Raiden need nerf ASAP. No butts about "combos". Nobody even does those. Its forward square, up square and up triangle for Kratos. And i swear to god if you dodge roll in wrong direction Kratos' level 1 moves extra bit. Raiden would be nice if forward dashes wouldnt combo to other moves so easily. Its bad because Raiden is one of the fastest but also strongest and combo-masters? Way too much.
I saw this Dante who just slaughtered me. I couldnt even move. It probably would had had AP burst at 150 but he managed to kill me by super so i probably didnt see it. Althou i guess its fine since Dante is hard to master. But IF there are infs they should be fixed
Like Dante, Sly is hard to master, but i feel like he has actual weakness with no blocking, dodge rolling and air dodging. Small nerf on level 1 and small buff to level 2 seems good enough.
Spike needs just super buffs. Otherwise he has amazing and fun move set. With good super he would be one of my mains.
Jak and Sir Dan are the worst characters and need buff in anyway almost. But its not gonna happen since they are just "hard to master". How in the **** are they so blind?! Sir Dan is probably one of the only characters whose 3x normal square DOES NOT do 40 AP. Sir Dan gets just 30 AP. Keep in mind Raiden's and Kratos' 3x normal square does give 40 AP. Hmph.
Even at 500 AP levl 3 cinematic supers would be incredibly not worth it but atleast it would be improvement.
Other characters i just had some personal opinions and in general work fine. Their buffs wouldnt even be that great. Hell i think Heihachi is better than i thought. A lot of easy ways to combo level 1 and AP gain is fast.
Some of the problems with buffs are that some Trials would become harder. We should also keep them in mind.
To good thing about this game is that even bad characters can be deadly. I have seen deadly Jaks and Sir Dans.