Allow mounting in combat but with a cast time, say 8 seconds-ish, or whatever is necessary so it isn't abused in a pvp battle. This will circumvent the whole "stuck in combat" problem that we all experience when players and have to run on foot from keep to keep.
Playing since Feb 2015 / TES fan since 2002
Main alliance: Ebonheart Pact
All classes, all specs, 21 characters / 2 accounts