Basically what the title says.
Redo the Squad SL Req. There is little to no time to properly outfit your marines as a SL within the allotment of anywhere from 0-20 minutes, let alone 15.
The issue is only more prevalent the more attachments you hand out. I tried handing out attachments and 'stuff' in 3's to Delta and barely got through a couple marines in 15 minutes.
Resorting to just saying 'Fuck it', and having to mass dispense a bunch of random shit isn't Squad Prep Req. Its a waste of time, effort for all involved and poor map/game design.
Either make it return to the old Req way, or redo it entirely so you have a dedicated Pfc or something do it (at least, along with the SL if not alone).