I think the tier 2 kit options are a bit lacking in comparision to tier 1.
I find minion dectector to be the most useful. Also the warpfall trasmitter and gaurdian chip are also good choices (evrn though the gaurdian chip is unlocked far to late to be useful if your regenerating).
I dont see dome shield battery or ice pick bieng of any value (unless the extend the time it takes to hack without icepick).
Dead mans switch could be useful in hardpoint but it seems far to situational to be really useful.