Well, a group of friends irl and I, chose our perks according to how we were gona tackle the map.
Bioahazard ( U-room), Biolab (spawn), Offices (ground floor), Evilsantas lair (narrow passageway) Filthscross ( in that 3 door room right before the trader which is underground; for some reason if you keep the wide door welded and one of the narrow doors welded zeds only come from the third narrow door), ALL of us used lvl6 supports. 6 aa12s+ hunting shotgun, it was basic kill,reload rotation between us. For patty, well, you've probably seen how patty dies against 6man zerks with chainsaws/katanas right? we did it with aa12s+HS
Westlondon (tunnel), departed (warehouse), crash ( by the trader with the weldable door) 4 commandos 2 sharpies, one of the commandos went demo to lay defensive pipes against fps.
Foundry (multiple areas, usually close to whichever trader we ended up with, for example, we held up at the control booth above on trader area, we held up in the red room which had two weldable doors, one in front one at back; we kept one welded while we took the wave from the other side, ya'l can picture the one upstairs at the 3rd floor no need to explain that area) 4 supports 2 mandos. 2 supports held the doors, mando's took care of most of the wave, while the other 2 supports covered fire or helped keep the welded door. FP rounds, we just emptied our SCAR/AA12 at it. Patty, same thing, Mando's painted wherever patty was incoming from or running away towards.
icebreaker, run and gun, m14 spammers lol.
Currently doing Manor, we succeed with a full support spec team holing up in that cave, we just keep dying to patty. Actually doing all these maps, all of our wipes are during patty rounds.
Its not really what loadout ya'l are going for, its really all about communication. If one of ya teammates see's an FP and doesn't go "OMG AN FP BEHIND US" , or at the very least a voice command "Look out!" there's no doubt your team is looking in for a wipe. Doing it in a pub is gona be hard, as communication doesn't really get through that fast, unlike the group im in, i just slap my friends beside me and scream for help. I've played in many (well, actually there are only a handful of HoE pubs out there) HoE servers, and most of the wipes generally comes from miscommunication.