Charlaquin
Goblin Queen (She/Her/Hers)
It’s a pretty reasonable change to make in terms of inter-class balance. Personally though, I prefer there being a mix of short and long rest based resources. If you follow the adventuring day guidelines to the letter, it shouldn’t make any noticeable difference, but I for one like the wobble. Some days long rest classes perform better, some days short rest classes shine. I think that’s a good thing for the game as long as the delta isn’t too extreme. If you get somewhere UB the ballpark of 4 to 8 encounters between long rests (whether that be because you do that many encounters in a day or because you change the time a long rest takes) and 1 to 3 short rests between those encounters, the power balance has an appeasing dynamism without anyone ever feeling useless. YMMV though.A few years ago I got rid of short rests and just tripled all short rest abilities and let them operate on a long rest. It's basically similar to others who allowed PCs to get 2 short rests per long rest. This left resting for HP as almost the only use of a short rest and that was shortened to 10 minutes (the length of an old school turn).
I've yet to notice anything detrimental to the game and it made my life easier when it came to designing encounters from one to one dozen per long rest.