Saing merks have heavy armor so they are fine, you prove how clueless as to how the game works you are. OOO I have heavy armor and its 5% better than medium armor, its soo good against all those attacks that bypass all armor anyway. I would so much rather have medium armor and 5 defensive cooldowns along with an aoe mezz on my merk than useless heavy armor.
Charged bolts on a 5 second cooldown. And give merks a slow ability like most classes have (force slow for example).
Putting either grav round or charged bolts on a 5s cd would screw commando dps in pve really badly.
I do agree we really need an on demand snare or root with a low cd.
There's also the issue of utility. RWZ teams will not want dps commandos (even if they can properly dps) unless they bring some utility as well. Perhaps give them a purge type skill which allows them to remove buffs from enemies (like WoW shamans), or something akin to bloodlust which would increase attack/cast speed on the group.