2 - grep for TODO and FIXME
3 - when shot origin is inside warpzone, vortex shot fails (and is even drawn in totally wrong direction). WHY? Possibly v_forward got lost?
15 - devastator: YES (except for trail bug)
16 - porto: YES (bwahahahaha)
20 - fireball: YES (BFG effect cannot work through warpzones by design, so it's not available through warpzones)
23 - shockwave: NO (does not support warpzones currently)