ok, maybe lightening gun has some useage...
... but it can miss fleas and isn't as good as an allrounder as the shotgun is.
Strike isn't much faster if you have 1 high density plating.
Gauss got nerfed a lot in both range and damage - the same for slow beams.
Once introduced they were great AA if morphed to disruptor beams, but get nerfed in range later.
Personally I dislike how coms get nerfed so much in both - in strenght and in costs.
get a support com, give it e-cells, 1 nano, 1 nano/lazarus at level 2 and be happy with it.
Unless you excess or play on sea maps, there is nothing more that you need.