The reason why the early transers (Gohan/Trunks) don't get any more moves when they trans is simple; they are too powerful as it is. A person good with melee can be Trunks, go ssj lighting fast, then be invincible for pretty much the whole game. A person good at beam spam can be Gohan, go ssj lighting fast, and spam the map, racking up a HUGE pl/score. If Vegeta and Goku only had to get to 1 mil to transform, I would say give Gohan and Trunks more moves. I have seen you in multiple servers woozy, all I see you play is Gohan(then the spam commences), which explains your bias to Gohan. I have the same bias toward Vegeta, but I realize he is pretty much balanced, so I don't complain much. I just wish they made Renoku not suck.
EDIT: Well, from the 3 rounds I played with you in battlearena, all i saw was Gohan, and MOSTLY what I saw was beam spam. Maybe that's not what you do ALL the time, but that's what I saw. Sheesh, I just joined a server where someone was 64 and 11 with Gohan, all on virtue of kame spam. THAT is why he doesn't have any more moves, he doesn't NEED any.