droid327
Hardcore casual soloist
Much like the experimental tumble was added, it could be the case of adding a checkbox or toggle for easy access if the thought of having to press a button is too much to bother with. Toggle on you will auto increase speed while not in combat, toggle off, time to go smell the daisies and run at a relaxed pace. Everyone a winner.
I think the best design is pretty much what Exp Tumble was, except on purpose instead of on accident:
A button you can press to increase runspeed to "tumble speed" while its held down. It doesnt work while in combat, but out of combat you can activate it whenever you want, immediately, and then let go whenever you dont, and there's no limitation on charges or duration or cooldown.
If you really dont want it, just never press it - heck, you can unmap it entirely. But then its available to everyone, and you dont have anyone complaining about weird animations breaking their immersion, or having to spam a button.