Barely high tier is kind of what people expect of Ike now, anyways. Quick Draw could use some more damage, but it isn't enough to make Ike feel underwhelming. Aether having super armor properties starting at frame 1 would be awesome, but Aether isn't a bad recovery move as is, especially with the whole spiking property. Counter moves in-general are read and counter isn't a move that should ever be relied up on for anyways.
I'm so confused on what you mean on the smash attacks being dysfunctional. D-smash may be incredibly mediocre and should be a lot safer, but it still functions. F-smash is designed to be incredibly read based, and with how good Ike is at racking up damage, and being able to have quite a few safe ways to attack, having a smash attack that can get you a kill as early as 65% with a hard read really doesn't hurt Ike.
Which leads to u-smash. I think it's safe to say that if u-smash were to get buffed, hell would break loose.
Usmash and Fsmash have 3 more FAF than they had in Brawl.
Fsmash:
-84 FAF is terrible, +3-4 more than Brawl's
-17 and 19% sourspots barely kill with partial charge at 100%
-Its range is not too great, and it doesn't help that max range is also a sourspot IIRC.
-Damage is mediocre compared to its speed.
+It's good for shield break punishes I guess?
Usmash:
-71 FAF is terrible, +3-4 more than Brawl's
-25 frame startup makes it the slowest usmash, making it a poor option even when jump cancelled
-Its old sweetspot of 19% turned into a 10% sourspot, making it very annoying to hit people who air dodge->nair
-17 damage is terrible for its startup
+It's incredibly strong with rage
Dsmash:
-71 FAF is terrible, compare to the vast amount of 40-50 FAF dsmashes
-Its reach is quite low compared to practically any other Dsmash. It barely outranges Lucario's that hits on both sides at the same time, and is ~75% of Link's or Marth's.
-Its hitbox sweeps low to the ground and is paper thin, so it isn't too great at catching landings.
-13 frame startup is terrible for its reach
-It's barely as powerful as ftilt or bair, while being slower, laggier, and less range
-Its knockback angle is pretty high up
-Doesn't hit behind you properly since they nerfed the lingering hitboxes from Brawl (and it was already bottom 3 smashes in Brawl)
Then there's the global change where shields no longer cause edge slips as easily, pretty much negating these moves to obscurity/usage of once or twice a set. Compare the smashes to DK's and then it just becomes sad. Fortunately, Ike has very manageable tilts, jab, throws, and aerials. Specials are good enough to use, but aren't great due to high startup or low damage.
Outside of dsmash, buffing his smashes is out of the question since casuals believe these attacks are good.
As far as Smash 4 recoveries go it seems pretty ***. It has some applications with ledgeplay but non-sweetspot recoveries are instant mid-tier at best.
Quickdraw is the main reason he isn't free offstage.
Aether's only saving grace is that it has a bunch of invisible hitboxes in front of it, but it's easier to spike than it was in Brawl due to the invisible hitboxes being in slightly different locations than in 4. Unlike Brawl, you can't just SDI and tech the stage anymore either. Fortunately, aether can be placed where it's difficult to get the spike if the Ike player is wary.