I agree with your number 2 solution, however I don’t believe 4 or 5 restrictions are necessary for balance, small steps go a long way, a possible solution is 1 with the option of more for dnd 5e fans. This would slightly rebalance the based game for everyone and would allow dnd 5e players to get that fun dnd tabletop kind of feeling that I assume there is. Also people need to remember that short rests are currently useless and are also in some need of help, i have actually switched my mind on it recently and think that a well rested bonus would go a long way to make short rests more useful. But thats just my opinion, I haven’t seen many other comments about short rests fixes.
The main reason they are useless I feel is because of how easy it is to Long rest. Their usability I think would rise drastically just by what you said, a few small steps to limit long resting.