I dont see myself actually touching anything off the list you put up outside of minecraft, squad,insurgency sandstorm and arma 3 but even then for me it depends on the gamemode. the rest seem like come and go kinda games, not something ill bank a ton of time into week by week
Arma 3 is doable but I'm not sure what you'd actually do? Definitely something that could happen if someone has more insight to it.
a rotation of antistasi, king of the hill, invade and annex, and some days where players can zeus would work wonders. king of the hill is a PvP, control the zone type of mode. antistasi is a team based effort where you're rebels trying to overthrow some dudes, collecting supplies, doing big and side missions. invade and annex is a pve coop where your goal is to capture various areas against AI enemies.
tons of mods to fit any theme you'd want between halo, different eras of combat and all.
having zeus times where people can build and upload their own missions then zeus during it is essentially how you guys did your hl2rp events, its good fun. zeusing is basically an option where a player can basically live-edit missions while people are playing them and control the enemy AI n shit.