In order of drooling (200-400 and new 500 F4 II are the top of my list)
24-70 F2.8 - don't care about IS, I want it to be sharp - just as sharp as the 70-200 F2.8 II
180 or 200 F4 macro with Tilt shift
TS/E 45, 90, 135 (or similar). TS are great for pans.
Zoom extender (1-1.4). This may be technical very difficult, not impossible, to produce
1.7 extender - when 1.4 is not enough and 2.0 is too much
Other things I want:
- Canon to buy Hassy and get the price of bodies down. 40 MP MF body at $10K. Price of lens reduced by 25-33%. They can not add many more MP to 35mm sensors without getting into (1) serious S/N issues and (2) reaching diffraction limits of lens.
- 1:3 Pan camera (35mm or larger sensor). If 35mm size sensor, adaptor to use Hassy Xpan lens. Manual focus okay. 6x17 size sensor would great, but the price would be over $50K
Enough. I just spent my entire photo budget for the next 5 years.