i remember complaining that the WFC toys were missing story integral weapons like an axe! it actually looks too big for optimus but maybe thats because he's only deluxe size :P i was playing with both optimus and megatron last night and they seemed so puny...

as for a weapons set, i also wanted that from the beginning since i played multiplayer a lot and thought it made more sense but the problem is when the characters translate in the toy design process - they would all need the same sized arms.

in the game i remember it had a scanning process and materialized over? their arms so a weapon set wont be likely at all unfortunately :/