Just my 2 cents Laser pointer on Shaft is fine as long as it is not visible from every corner of map, that defeats the whole purpose of being a sniper. One alternative can be like laser will be only visible to someone (opponent players) when they are within a certain radius of the Shaft's aiming point. This could be 30 degree in any angle from the aiming point. I believe that will give both party a fair play.

This is my first ever comment in forum and I just want to say predictable crystal zone is a VERY BAD idea. Today I was playing TDM with Railgun + Viking, I was on a bridge from where I was getting good kill and suddenly found that a Wasp from my team is pushing me from behind! Later on I found that I was sitting on a crystal drop zone (I was so much into the battle that I didn't even notice) and that Wasp was trying to take the place by moving me! Rather than being a fight between two teams for winning, now the game become fight among own team for crystals!!!