Interesting. I'd say the Long Rest issue is a far larger issue for 5e than the Short Rest - and this is not just me but as evidenced in Enworld's thread history.
I would imagine them revisiting the Long Rest for 6e.
I think that's because ENworld is extremely, extremely un-representative of 5E players as a whole, based on I dunno, anywhere which isn't full of grogs like us, but more of the vast majority of 5E players who are 35 and under, and for whom 5E is their first (or first for so long they barely remember it) TTRPG.
So we've had endless pointless going-nowhere discussions of Long Rests from literally day 1 of 5E and what they should represent and so on. If you changed the default effect of them, sure, you'd please like, some grogs, but according to WotC's own surveys, grogs as a whole (i.e. the oldest category of players, I think WotC had it as like 40+ or 42+ or something) is like what, 12%? And of that 12% of 5E players, how many want Long Rest to change? 50%? 25%? 10%? So you might be looking at pleasing 1.2% of players or less by changing this!
And importantly, not only would you be pleasing say, 6%-1.2% of players, you'd probably be actively pissing off somewhere ABOVE 50% of players who are used to Long Rest working a specific way and don't see why it would change.
The question of course is, do you want to design a 6E that is popular and successful, or do you want to design 6E into an ultra-niche game that is ideal for you, but makes 4E look incredibly popular by comparison? A lot of people would be happy with the ultra-niche I'm sure, but my point is that if you change stuff to be more OSR-ish/Old-Skool just because some grogs on ENworld wanted you to, then that's probably the direction you're headed in.
I mean, look at 5E-likes - A5E, ToV, DC20, etc. do any of them change the definition of Long Rest significantly by default? I don't think they do. I could be wrong, tell me if I am! But if this was an ez-pz way to ensure more people liked something, all of them would.
(DH, a D&D-related but not 5E-like game notably does change Long Rests a bit, in that it's a case of "Pick 2" rather than always a full reset - I think fiddling on that level might work, but even then it'll probably just create balance issues.)
I do think that ENworld etc. does show people want some options here, but I don't think it supports changing the
default situation.