I'd allow it, because to be completely honest it seems to me that it'd be next to useless against squads of armoured targets, whether they be Terminators or somesuch or vehicle squadrons. Why not let my opponent blow all his points? :p
You don't need that many twin-linked lascannons, it's a waste of points - with that thing you'd basically sit stationary, stopping tanks going on a section of board probably.
Thing is, you'd need to put something in about shooting at different targets with different weapons. Otherwise, well, seems like a waste unless you're fighting Titans or something.
Wargaming should never be combined with your love life or a pot of honey.