Blast radius if HK grenade can be smaller than that of hand grenade, actual 40 mm grenades are weaker. It should kill fully armored player from a distance of about a meter or so, otherwise only damaging and maybe crippling one.
Imbalance concerns make sense, skilled grenadier in BF2 can deliver some nuisance, but skilled is the keyword here. Targeting with those grenades is more complex than Quake/UT rockets, sinse they are moving by parabola, and with properly nerfed blast radius it can be quite hard to hit closely enough to moving target.
Anyway, this game has instakill SR-8, auto weapons are much more powerful than those of Quake/UT, so, I believe, modified HK can be interesting, but not that imbalanced, addition.
This post has been edited by goplin: 02 February 2014 - 12:55 PM