Housing and other things
I think you should read this thread about housing, the author gives lots of examples : https://forum-en.gw2archive.eu/forum/game/suggestions/Housing-and-Guild-halls-GvG-PvE-and-RP/first
However I do not agree with the mounts. The maps are not that big and there are plenty of waypoints across Tyria. So mounts are quite useless. Just walk and admire the landscapes or use waypoints.