Well, I can confirm that this is now officially in the next build (Hurtgen for infantry and Vossenack for both infantry and armor).
Do bear with us though, maps have been overhauled so there will be more 'St. Lo' maps for the mean time, but bear with us like only SPers can. We are working as best we can to bring more content to the community.
We do read your comments and check them out. I for one still play SP/COOP more than I play online, so I am personally aware of every single one of the navmesh or AI issues raised and lobby hard to get these done.
But there is a priority queue, so be patient with us.