the r5ca had a 72degree seat tube angle. None of their seat tubes truly bisect the bb on any of their bikes, although I haven't stared at the latest ones to doublecheck. Either way, that wasn't a design feature of the r5ca. The slacker seat tube was purely to better accommodate a lighter, inline seat post.
As far as the cable entry points, I'm glad they decided to NOT enter the cables at the head tube. Doing so is easy and light, but not convenient. especially for all you guys that like to slamthatstem. Leads to tighter radius bends, kinked housings at the entry point. I also like that the rear derailleur cable exit point is not on the very back of the dropout but in front of the axle. Again, it gives more room for gentle bends.
Bikerumor has some pics that show the min/max/median weights of the frames for each size. Also, their weight is supposed to include Der hanger, cable guide, frame stops, etc. Basically all the dedicated, required parts.
not being able to take a seatpost battery kinda blows, though.
I haven't seen a Cannondale Evo in the real world at the weights that Cannondale advertised. On top of that the Cervelo gets that weight with Kamm aero tubing. Very impressive (especially if you also consider that on top of that, their claimed weight is with hardware [seatpost clamp, front and rear derailleur hangers, water bottle screws, grommets for Di2?] and an integrated magnet)