Baron Opal II
Legend
Interesting.It's fine. But you need to put a limit on the number per day (I do 2)
You do that and the game is actually significantly improved.
So much so, and with no downsides, that having tried it, the idea of returning to the 1 hour short rest would seem perverse.
It goes against my grain, but if there is a hard limit I can see it from a mechanistic perspective. I find an hour more diagetically pleasing, and the conceit of "if we can take an hour we can take eight" to be fairly rare in my games.
Thinking about this, and the relative paucity of my running 5e, it seems that the only real time that I would consider short rests to be strongly abusable is while the PCs are investigating, researching, or resting in Civilization. If your travelling it seems like you would lose too much progress if someone was determined to take 4-6 short rests during the day.
I would much prefer short rests to be mostly eliminated. I can appreciate the ability to "take a breather" and chug down some sour Ophirian wine to clear the dust from the throat (and gain some hp back). Fighters and thieves having short rests to recharge abilities (stretching, limbering, whatever) would be fine.