Static emplacement doesn't fit coh. Trying to build a mortar or bofor anywhere near the enemy front is going to get the emplacement focused down pretty quickly. Wasp are fragile while the croc is DLC.
what is every britbong player expecting from emplacements?
its meant to be a defensive tool and should be used like one. you cant just push the enemy of the map, build a offensive emplacements and its #GG.
on my shitty ~500 2v2 AT rank i can tell you a well placed defensive mortar can shut down alot of aggressive play into their territory.
(take the "woods crossing" or however it is called in english, place mortar infront of your base when you start north and the enemy wont be able to push your munitions and will have a hard time to cap the vp on west. and guess what? axis wont be able to do anything against that emplacement because its far behind their frontline and directly infront of their base. you cant counter it with arty (brace) too.