There are some CA, but nothing terrible. Do you think it is possible that Canon would make f/1.2 version instead of f/1.4 MkII? Any thoughts about 135mm f/1.8L ? (even Sony has one )
Controversial perhaps, but I'm not expecting the entry level primes nor the slower selling L primes being updated ever. The quality of zooms has improved to a level approaching many L lenses, times have moved on with digital tech to push the ISO performance to greater levels than ever... In all seriousness, how much better is a 135mm f2 than a 70-200mm f2.8 IS II when considering the flexibility of the zoom.
So, you like zooms, but you can't really compare them with primes. They are different animals. The main advantage of the prime lens is it's wide aperture. You can't compensate it with IS or high ISO numbers, because those are just for exposure manipulation. Besides, some new crop bodies can be set to ISO12800 or even 25600 but the usable limit is the same old ISO3200.
What primes sell well ? I don't know for sure, but pop a circa 1995 entry level film camera with a cheaper f1.4-1.8 prime against a modern entry level digital with a modern zoom and better ISO and I suspect most users would shrug their shoulders and say can't tell the difference, which leads into the next gen zoom and sensor tech... Why have dozens of zooms and primes that overlap, surely that's bad for getting production costs down... Yeah sure, some primes are special, which is why canon can charge small car prices for them.
You already answered your own question here. Primes are for those who actually see the difference. If you don't - buy a zoom. Or, maybe you need the zoom flexibility for the job. Most professionals are mainly using zoom lenses, because they need to work fast and there is no time for lens swapping. Some are using primes only and there are 5 L primes and 3 5D2 bodies in their bag. Nothing is wrong with that.
It's your choice.
My feeling is that over the nex 10 years we shall see the lens range order into entry and midrange EF-S zooms, a f2.8/4.0 L range, plus a few select primes that sell well and a few specialist superteles, tilts and macros. I fear the EF non L prime is dead and will slowly disappear, the the current range of L primes will start reducing in range choice and that we may also see a merge of some specialised lenses... 100-180mm zoom macro ? 45-90mm zoom tilt shift ? 24-35mm L f1.4 zoom ? 50-85mm f1.4 L zoom ? Does anyone really need f1.2 DOF ?
I agree that in the future there will be only L and EF-S lenses. Some of the non-L primes should be updated with EF-S primes (like EF-S 28/1.8USM). However, reducing the L prime range is an absolute nonsense to me
. I doubt that you would want to buy a f/1.4 zoom, because it would be too big, too heavy, too expensive and the IQ would be not so good.