Electronic shifting: No, thank you. I can appreciate the advantages, but I prefer the tactile feel of mechanical; I suppose this might be analogous to a manual transmission in a car vs. a dual clutch transmission or an analog watch vs. digital. Half-joking, but I envision a day where a company such as SRAM will begin a subscription model.
Full integration: No, thank you. I think it looks great, but the expense associated with minor position/bar/stem changes isn’t worth it to me. I don’t race so nominal aero gains aren’t important to me.
Tubeless: I have tubeless compatible wheels, but don’t think it’s worth the headache of setup/maintenance. I also don’t want to be stuck with hookless rims.
Disc brakes: Awesome. I would prefer to have the rotor as a consumable item versus a rim, particularly if the rim is carbon.
3D printed saddles: Sounds interesting, I can’t justify a $400 saddle when I do not have discomfort with a traditional construction. I’ll try one when the prices drop significantly.
Short Nosed saddles: I switched to one and have found it to be more comfortable than the Selle Italia SLR I previously used.
Power meters: I recently ordered one, but it hasn’t arrived. I think it’s going to be a valuable training tool.
Smart Trainer: I briefly rode a friend’s and enjoyed the “road feel.” However, I already have a pair of Kreitlers with the Killer headwind and am happy with that setup.
Zwift/Virtual riding apps: I don’t have experience with these, but the graphics seem like they’re from 2002. The group rides/races seem interesting.
Shoes w/ Boa Dials: I can’t justify the expense of $400 shoes to get the full Boa experience so I can’t comment. However, I went from buckles w/velcro straps to a pair of lace ups and appreciate how finely I can adjust tension throughout the foot. I guess what’s old is new again.
Ceramic bearings: I don’t have experience using these. However, my understanding is that ceramic bearings are harder than the metallic races in which they roll. Therefore, the races get worn which would seem to defeat the purpose.
Manufacturer-Direct Carbon Wheels: I don’t have experience using these, but the offerings from companies like Winspace, Far Sports, etc. look interesting. It appears that they’ve advanced to the point where it’s difficult to justify spending an additional $1000+ for a name branded wheelset, particularly when some of these companies produce wheels for the mainstream brands.