DaveMage
Slumbering in Tsar
I'd change this slightly to "If you enjoyed games with a wider range of power, this edition (so far) will disappoint you."
Given that power level is relative to some degree, high level play in 5E will feel somewhat similar to other editions, it is just that it isn't as "cut off" from lower levels as in prior editions, especially 3E. 5E is not Dust Mites & Demigods, like prior editions.
This is also why 5E may be the ideal edition for sandboxing. Sure, low level characters will be over-matched by more challenging monsters, but the boundaries are softened and more interaction and combat is possible across tiers without instant kills.
I think for me, the ideal D&D lies somewhere in between 3.5 and 5E (and I don't mean 4E

I think 5E goes too far in blunting the power curve, but does an excellent job with keeping low-level monsters relevant. (As one would expect since the game now really covers a shorter power curve.)
I think the lack of higher level spell slots is disappointing because so many spells scale with a higher level casting. I would like to see a hybrid system where both caster level *and* spell level matter instead of just spell level. (Which is like 3.5 with its metamagic feats, but I'd like to tap into the more elegant way 5E does it rather than have the multiple feat requirement.)