My thoughts...
1) Headlight setup on the red car is far better than the yellow
2) Cycle fenders on both are great (much better than the current SL-R fenders)
3) Side pods/skits on both are good I am partial to the yellow (both are better than the current side pods)
4) I like the engine cover on the yellow car but would anything actually fit under that? I am still not so hot on the curved supports coming back off the roll hoops. I thought that the reason for using the curved supports was that some popular engine options wouldn't fit under the original straight X-brace. If that is the case then it doesn't look like anything will fit under that engine cover (please tell me I am wrong because I like the cover). I would like it if the engine cover went OVER the support braces. A cover should hide those as well as the engine.
5) Maybe need to do some renderings of a more practical/useful wind screen. This will be hard because the vehicle looks better without it but many customers will want one.
6) When I fist saw the front end I didn't like it but it is kind of growing on me now. I like it better than the current F1 front end... that said I would love to see a front end like this
I also think that an engine cover like the one pictured might(???) look better and offer a little more room for an engine.
I really like the SL-R (and SL-C) and I am really pleased to see that changes are still being considered and that the project is still moving along. Fran, thanks for sharing these new ideas and for soliciting our opinions.
Remember, nothing helps us make up our minds to buy a car like pictures (well that and an economy that's not floating around in that blue liquid in the bottom of a port-a-potty with all the other turds)!