Drop-trooper regiment is one that I have thought about. The problem with the Cheese-Grenadiers is that EVERYONE in the regiment gets a plasmagun. Seriously, the rules allow you to create a regiment where every single trooper and support person has a plasmagun. ...But the rules also say that you need GM approval for the regiment you create.
But I have decided that the support specializations will be kept rare, perhaps only one in the team. Last time we had more support specializations than regular troopers and I want to run this campaign my way. (Besides, those aren't bad and from fluff reasons it is easier to explain a squad with mainly guardsmen than one with Psykers, Enginseers and Ratlings all working alongside.)
no way! that's ludicrous, besides, plasma is expensive, rare, and finnicky. most regiments have maybe five plasmas, tops. (according to fluff). i thought grenadiers only had access to carapace and more explosives than ordinary. you can't spell grenadier without "grenade".
regarding fluff reasons, it could be explained if it was a command squad, but not if it is a spec-ops squad (like veterans, storm-troopers, drop-troops, infiltrators...). why not use standard guard squad restrictions? one special weapons trooper, one sargeant, one commissar, maybe a psyker, one heavy weapon team, perhaps a guardsman doubling as a comms-officer, and regular grunts for a total of twelve men (counting the commissar and psyker)? for example's sake, that'd mean that if we play sarge, psyker, commissar, meltagunner and autocannon, there's 7 grunts left for comrades (read: rerolls).
also, i just had the mental image of a commissar blam!-ing a psyker during a parachute drop. heresy has no place in mid-air.