A lot of people have been demanding that characters be switchable in the middle of the game. If splash damage does that they will COMPLETELY break the game and its mechanics. Those of you who want this have seriously failed to see the repercussions of allowing to switch characters mid game so I will explain to you what would happen.
This game has, idk, 50 (?) skills. And we only get around 20 skill points to spends. That is perfect because it forces you to choose if you want to be a master at one class [maybe 2] or a jack of all trades and spread them out. If we had the option to switch characters then everyone would do the exact same thing---Create 4 characters, each of which has all the skill points invested into one class and the rest for the universal skills. This means that EVERYONE would go into a match with maxed out skills for every class. Sorry but switching characters in game is just a bad idea.
With all of that being said, I am also against a level cap increase. I think 20 skill points is just the right amount.
On a side note, switching body types is a completely different story. Being able to switch between mini gun and smg, along with running speed and 'armor' just entails adjusting to the flow of battle rather than going into the battle being 'the perfect soldier'. Switching body types I would understand, but even if they didnt i would be fine with it.