To be honest my bigger dissatisfaction in Canon is the feeling they've been going nuts releasing expensive lenses, Not lenses for the masses.
Still no normal fast prime for EF-S for instance, Everyone else has one of those. An EF-S 30mm f/1.8 would be lovely..
Would i switch? Eh... Maybe? I like the 200-500 VR, But I can also just get the sigma 150-600..
Are you not happy with the Sigma 30mm F1.4?
Canon isn't going to produce faster aperture EF-S primes most likely. They don't save space by doing so. Notice the 30mm F1.4 is big, it's not like it's a smaller lens. The reason you don't see a bunch of plastic body F1.4 and F1.8 primes for EF-S mount specifically from Canon is because it probably physically makes no sense to make those for that specific mount when they can just make them EF mount for everyone. They're not going to be smaller with those apertures.
That said I do agree that Canon revamping some of their entry & middle of the road lenses would be nice.
The 35 F2 IS is a phenomenal release, massively updated that lens, and this lens is so good it challenges the optics of the 35L. And it has IS!
The 50 F1.8 STM is a great release, fixed all the sins of the 50 F1.8 II, and it has improvements all around and a super attractive price. Good lens for all at that cost.
The 24 F2.8 STM is an interesting release, EF-S mount only (full frame shooters would LOVE a 24mm pancake), it's only F2.8 though, but a new pancake is a great thing. Great price.
But... where is the new 85mm? 85mm F2 IS?
Where is the new 28mm? They released these annoying 28mm and 24mm F2.8 IS lenses, that are nice, very good optically, have IS, but ... only F2.8. I guess that's the cost of not being Luxury.
A new 28mm F1.8 revamp would definitely be nice, such as 28mm F2 IS or something.
Funny they never re-released a 50mm other than budget this whole time. The 50mm F1.4 and the 50L both need a revamp (especially that F1.4).
Where is the new 100mm F2? They have a 100 F2.8L IS that gives you stabilization, but it's expensive. Why not a 100 F2 IS (non-macro)?
They have re-released most of the EF-S zooms with way better optics, and STM, and IS on several. These are actually crazy good lenses for their costs. They're just not 'fast.'
"Fast" EF-S glass doesn't save space. Look at the 17-55 F2.8 IS. It's huge. A good mid-range zoom for APS-C is a good thing, but I don't like the price of this thing. I do however like the overall package of the third party 17-50 F2.8's and they have stabilization too now. Unfortunately they just don't have awesome silent focus systems on those to keep the cost down.
So honestly making specific premium quality level lenses for EF-S doesn't make sense. Since space isn't being saved, it doesn't help them to limit the mount type. For an example, look at Sigma's 18-35 F1.8. It's massive. MASSIVE. Making fast premium glass for APS-C doesn't save space. So, most don't do it beyond one or two releases. Third parties are more vigorous because they don't have to worry about mount types and all release EF mounts.
It would be nice to see some more in-between glass though.
Mean while, Tamron has released:
35mm F1.8 VC <-- This lens challenges the 35 F2 IS.
45mm F1.8 VC <-- This lens in particular is super interesting, a stabilized 50mm basically that is still quite fast.
90mm F2.8 VC (macro) <-- This replaces 85mm and 100mm basically, is still fast just not super fast, and has stabilization.
I have a 22mm F2 pancake on my APS-C (EOS-M) and I absolutely adore that lens. But it was only possible on the smaller EOS-M EF-M mount size. The lens is practically as big as the other pancakes. It's just faster at F2 which is awesome.
30mm F1.4 on APS-C is a great general focal length.
Personally, I like 50mm on APS-C (and hate 50mm on full frame). But I prefer telephoto and the 50mm on APS-C behaves like my favorite focal length on full frame, which is 85mm.
I use APS-C, full frame and APS-H, so I really don't care about EF-S glass and care more about things that work across the EOS line. But I actually have more third party lenses than anything (Tamron actually). I have a handful of Canon lenses.