Wyld - Boulder Builder Mountain, counter to plagues.
Slate - Street King Castle, counter for Shatterbird
Maestro - Street King Castle, support for Wyld Hunt in sector.
Feral - Street King castle, support for Wyld Hunt in sector
Skein - Boulder Builder Mountain, psych support for Wyld. Remote control puppet immune to plague
Inquisition - Boulder Builder Mountain, psych support for Wyld.
Narwhal - PRT Downtown HQ, possibly the best option for stopping a Bakuda Custom bomb.
Bulldozer (Juggernaut and Hulk from Marvel) - Philadelphia General Hospital, counter for drones and zombies, as powers do not help at Docks, is vulnerable to plague and limited effectiveness against the tinker combo.
Weld - Boulder Builder Mountain, immunity to plagues
Willow (teleports through plants, can sense pain, touch-based painkiller/knockout) - Docks Shelter, ability can be used to capture Manton once located, MIGHT work on Crawler if her Case 53 physiology can survive his acid/poison. Case 53 physiology provides resistance to stinkbomb
Gully (Earthbender from Avatar: Last Airbender/Legend of Korra) - Boulder Builder Mountain. Ranged combat option allows her to provide a counter to zombies and drones without exposure to plague, provided she's near Wyld.
Legend - PRT Downtown HQ, exotic physics blasts effective at neutralizing bombs at range, not especially effective against preferred targets of Crawler and Siberian.
Alexandria - Docks Shelter, immune to stinkbombs, able to fight Crawler.
Clockblocker - PRT Downtown HQ, timestop is known counter for Bakuda Bombs, able to perform live capture of Bakuda if he can reach her.
Gallant - PRT Downtown HQ, Bakuda and Mannequin somewhat sensitive to emotional manipulation
Kid Win - Street King Castle, combined with Slate, he's immune to Shatterbird's scream, and can jam Tatsu to capture Jack.
Who/Suzy - Street King Castle, Slate and Shatterbird means that drones are useless, allowing her full stealth.
Miss Milita - Philadelphia General Hospital, ranged firepower.
Bladedancer - Philadelphia General Hospital, ranged firepower.
Gust - Docks Shelter. Aerokinesis allows him to disperse the stinkbomb, and drones, as well as POSSIBLY applying forced movement to Crawler while being way up in the sky and unreachable to Siberian.
Marrow - Docks Shelter, with Siberian out there nobody else can counter that
Weaver - Docks Shelter, Manton-seeker.
PRT Officers (automatic weapons, containment foam) - Street King Castle, as the best counter to Jack Slash, IF they can keep Shatterbird from roasting their gear
* Docks Shelter
-- Targets: Large civilian population, Marrow, Weaver
-- Enemies: Crawler, Siberian, Drones, Stinkbomb
-- Assigned: Marrow, Weaver, Alexandria, Willow, Gust
* Street King Castle
-- Targets: Overleague members, Street King members
-- Enemies: Jack Slash, Shatterbird, Drones, Bombs, Controlled!Tatsu
-- Assigned: Slate, Maestro, Feral, Kid Win, Who/Suzy, PRT Officers
* Boulder Builder Mountain
-- Targets: Boulder Builders members, Geode, Xylophone
-- Enemies: Burnscar, Bonesaw, Zombies, Plagues, Drones, Controlled!Uzu, Controlled!Philharmonic
-- Assigned: Wyld, Skein, Inquisition, Weld, Gully
* PRT Downtown HQ
-- Targets: Director Uriel, PRT leadership, Armsmaster, Dragonsuit
-- Enemies: Mannequin, Bakuda, Drones, Bombs, Controlled!Philanthropic
-- Assigned: Gallant, Narwhal, Clockblocker, Legend
* Philadelphia General Hospital
-- Targets: ~2,000 civilians
-- Enemies: Drones, Bombs, Zombies
-- Assigned: Miss Militia, Bladedancer, Bulldozer
Note: This is a tentative plan, catching up on discussion now to adjust.
EDIT: Made a few tweaks to fix mistakes