Speaking of parts, I'm still baffled by the inclusion of the HRE Wheels stickers in the livery editor despite not actually having those wheels, but now that we've seen more wheel brands get added, I suppose HRE designs could still be a possibility. (Though I personally would've waited to add the stickers until the actual wheels were added, haha.) I'd also say that it could be very cool to see more wheels from brands that have very low amount of wheels, like Spoon and Hayashi Racing.
On another note, I wonder if it could be worth seeing slightly older prototypes in Gr.1? Don't get me wrong, I'm profoundly excited to see more LMH/LMDh cars join Gr.1, especially as more automakers IRL discuss potentially entering such as Genesis and Ford. But what about slightly older prototypes from the 2000s/2010s? The Nissan Onroak DPi and Mazda RT24-P do look especially alluring, even to this day. The latter even has a notable difference from the Gr.1-spec Mazda LM55 VGT - instead of a rotary, the RT24-P uses a turbocharged inline-4. Of course, as far as DPi goes, there were two other manufacturers in that group - Acura and Cadillac - but they have more up-to-date racers in LMDh, with the ARX-06 and V-Series.R, respectively. Personally, if it were up to me, I'd just wait to see if Nissan and/or Mazda get on board with LMDh/LMH.