Update looks pretty good, I am quite looking forward to the Sian,MG touring car and of course the return of the caddy limo. I do have some feedback I want to give, it's more in general things rather than about the update itself.
First of all bringing back old cars from previous games is fine. However I'm not a fan of how all of these returning cars are locked to the playlist rewards and thus they become really rare for no good reason. The rarity is fine for brand new to Forza cars or some of the few more unique cars (ex: Cadillac limo,Peel Trident) but for cars that were attainable fairly easily in the previous game, it's just a bit annoying.
It would be nice if the accolades feature was utilized instead and these returning cars were instead rewards for completing newly added accolades or they could just be added to the autoshow where everyone can easily buy them.
On a similar note, it would be great if the playlist contained more playlist exclusive cars just like in FH4. Give us playlist exclusive cars as challenge rewards instead of always giving us autoshow cars which most people already have. The forzathon shop rarely contains cars that aren't available in the autoshow already. It's been a year since the game came out and the playlist exclusive car roster is already massive and some cars have only appeared once or twice so far (ex: 2020 Nismo GTR). I think most of the playerbase would appreciate there being more chances to unlock playlist exclusive cars, especially now after the whole credit glitch and auction house fiasco.
This is the feedback I have to give. (Sorry for the long paragraphs, not sure if anyone would actually read this but oh well, I just wanted to put it out there)