I think I've changed my mind on being a co-mod. It would just be too much work and stress. But, after scouring through alternatehistory.com and its wiki, I was able to find some helpful mapping resources:
https://www.alternatehistory.com/wiki/doku.php?id=resources:europe_maps_by_valdemar_iihttps://www.alternatehistory.com/forum/threads/base-maps-from-550-bc-to-modern-day-all-in-ucs.103802/page-2Anyway, I voted for War of the Spanish Succession, both because it's one of my favorite periods in history and because for that era, I was able to not only find a map that focuses on the whole world but also one that focuses specifically on Europe.