Karate Simes... nice idea but not exactly necessary. Try powerboosting an Aikido Sime and buff it with Proxy Technician or Daemon Boost 2.0 Aura... they can easily pwn an equal leveled player then
I use Code Shaper (both Proxy AND Utility) skills as my primaries already. I guess SOE won't introduce Fire Arms Simulacra because that wld require a few totally new trees. The Proxy and Utility skills are made especially for Hacker and Melee Simes: They buff Viral or Melee stats for them. For Fire Arms Simes u wld need to develop a tree that buffs a Sime's Ballistic stats
As a Code Shaper I'd welcome the possibility to make Karate or Kungfu Simes. Non-Code Shapers that wld have to fight these Simes probably wont: Aikido is the weakest of the MA trees. If you powerboost a Karate Sime it wld do incredible damage; or if u use Proxy Technician Aura to buff a Kungfu Sime it wld have an unbeatable Accuracy of like 195 (at LVL 50). That wld not be good for game balance I guess.
As much as I wld like it SOE won't make Code Shapers the gods of the Matrix LOL