Some playstyles are just not compatible with each other. I can't say much about your playstyle, but it sounds a bit gamist with a heavy focus on miniture/grid combat.
For the first part, that's what options are all about. And I've seen nothing about the 5e rule set that would make (a) martial healing, (b) fighters with declarative abilities, or (c) out-of-combat non-spell fiat, incompatible with the existing core options. It might be incompatible with how *you* want to play, but that was what this whole modular deal was supposed to be about. Use the stuff you want.
As for the second part, ummm no, that's not my playstyle.

I hate to burst your bubble about lumping together everyone who enjoys 4e. I don't really have just one. My preferences veer towards the more collaborative and player-empowering, though not for every game. I think most games could be improved with a bit more of it, however, especially games where some characters get a whole bunch of it.
I've been DMing now for over 30 years (1981?), and my favorite RPGs are RC D&D, D&D 4e, AD&D 1E, Feng Shui, Savage Worlds, WFRP2, Earthdawn, Paranoia XP, and Powers & Perils. I have an appreciation for Dungeon World (and other Apocalypse Engine games) though it'd never be my go-to game, and would love to sell my players on Fate, Spirit of '77, and Ryuutama. I'm never running 3.x/PF again, likely not playing them either, and didn't care for a recent retry at Marvel FASERIP as much as I hoped I would. I think 13th Age looks awesome, has some amazing ideas, and I'd love to try it, but I am also skeptical about some other big parts of it.
Most of those have nothing to do with grid combat, and most are only "gamist" to certain degrees, but I'm a firm advocate of remembering that RPGs are supposed to be
games, supposed to be fun for everyone, and that both my players and I have a responsibility to make sure it works out that way. So that's why I'm in favor of adding more cool stuff to 5e; I'd love to add it to my "favorites" list. I've run it for my group, but so far they've been disappointed. New, cool stuff might be just what I need to get them to give it another shot.
I haven't seen a proposal in this thread. Maybe I overlooked a post. What's the "this" that would expand the options? Link?
Wasn't that the sort of thing you were arguing against upthread? With Celtavian? That I replied to?
I don't have a specific proposal outside of "gee, declarative abilities are nifty, and it sucks that they're all gated behind spells, so maybe let's fix that."