I dont think its fair to take away ice arrow. is it annoying - yes but so is so many other skills and buffs. I had a look at your gear and i see you dont use Ice accessories, probably no ice resistance in ML skill tree ether. that makes a huge difference bro. Soul barrier and dmg cap i think is fine as it is.
Id say make it work only if mu helper is off. Then you would know that the person is active. but again i think its a bad idea. id say better rework guild war system.
Im not sure is there Barnake set in this server but the best combo would be barnake pants and boots + anubis. That leaves the sm with an shield slot where he can use the socket shield which would land another 3% double damage from the socket combo.