I hear this an awful lot, and I still don't understand it. 4e is no more "a combat game" than either 3e or 5e--and in several ways, significantly less of one.
I'm not saying it was, but I
am saying that when I first read the 4e books, the only impression I got was combat--which is
not the impression I got with any other edition of (A)D&D. And that impression turned me off significantly.
lls are both much more powerful and much more accessible than either 3e or 5e. "Spells with non-combat purposes" ARE in the PHB. They're called rituals.
Making non-combat spells into rituals, for instance, just emphasized that the game was about combat by stuffingthe non-combat spells off to the side.
They chose to put only 8 classes in each book to keep the books focused.
But it's interesting that instead of keeping one of the combat-heavy classes for PHB2--which is also a terrible idea, IMO, because by that time I was turned off and wouldn't be interested in spending money on it--they just to keep the face class away. One shouldn't have to buy
two PHBs to play a game.
PHB2, which came out all of 9 months later (June 2008 for PHB1, March 2009 for PHB2), covered all the missing baseline classes except Monk. I've no idea what you're talking about regarding the MM, since it's got plenty of typical neutral creatures (owlbear, berbalang, manticore, griffon, shambling mound, etc.) It's got angels, unicorns, storm giants, and (yes) dryads...who ARE plant-beings, why is that an issue exactly?
But where were the metallic dragons, for instance? The game seemed to say that the only purpose for a monster was to fight it--not to ally with it, save it from a greater threat, befriend it, or anything else. IIRC, metallics didn't show up until
much later. The same with the unaligned creatures--there was very little lore for most of them indicating that they weren't just combat monsters who weren't super-evil.
The ancient Greeks thought "hamadryads" were semi-divine trees, after all (with some myths positing the "dryad" alone as merely the projected spirit of the hamadryad tree body.) Specifically they are "medium fey humanoid (plant)." All "(plant)" does is tell you that dryads breathe and eat, but do not need to sleep; they're still humanoids.
It hardly matters what the Greeks thought because D&D has rarely cared about sticking to the actual mythology. D&D mythology has put them in between "protectors" and "seducers," and definitely not frontline combat.
I don't at all blame you for being put off by the presentation, but like...a whole bunch of this stuff is simply false, and some that isn't false is pretty willfully ignoring what's actually there in the rules (e.g. rituals, SCs, Bard showing up less than a year in, etc.) Is there any wonder people get frustrated with the way folks talk about 4e? You're talking about fixing problems that weren't there and addressing absences that weren't even absences!
Look, the question is, how would I redo 4e. And this is how: show, right off the bat, that the game is not just combat. Don't wait for a second book. Don't push non-combat options off to the side. Allow for friendly monsters in the first MM. Make it so, at first glance, one can tell that there's more to this game than just killing things.