hmm, wishlist, yes!70-200 f2.8 L USM II
This version should have:
-less weight (however achieved, it just shouldn't feel cheap)
-less purple/green LoCA fringing at f2.8
-a tad more contrast and sharpness wide open
-even faster AF (feedback loop would be nice)
-a hood with the click like the IS II version has
-focus limiter with more steps (1.5m-inf, 3m-inf, 4.5m-inf)
-AF stop button(s)
-white-white instead of muddy-grey-white paint OR a black painted version of it...
the old version (17years old) is a really nice lens, but the above mentioned points could be improved. except for the optical formula it wouldn't require much R&D. It would become a little less versatile lens compared to the IS II version due to the lacking IS, but I hope the pricing would reflect this. the IS II version shows that stellar performance wide open is possible...why not have the same thing without IS? I think this is not asking for too much
and I would pay a premium over the old version. for that I paid 1100EUR and never regretted the purchase. a lens with the above mentioned improvements is probably 1500€ to 1600€ worth to me, maybe 1700€ if it is featherlight.
also if someone invents a 70-180 f2.2 L USM lens at the same weight...oh well, now I'm dreaming...