The big problem with paid DLC tracks is that it gives very bad vibes in multiplayer - they can't use them in the lobbies if some players won't be able to race on them. Yet the people who do own them badly want to play them in multiplayer, obviously.
The only real way to avoid this is to make the tracks free. As I'm sure they know. It's just a question of whether the bean counter overlords are willing to accept this.
I think I mentioned it earlier in the thread, but they have an interesting history with this that makes it hard to predict what they will do.
In FM4 the Nurburgring GP pack was paid DLC and T10 said they weren't happy with how it turned out, as it couldn't be used in multiplayer hoppers or implemented into career mode stuff without upsetting people who didn't buy it, and that they would make track DLC free next time... which they did actually do with FM5 and the 3 tracks for it.
Unfortunately, for FM6 they flipped again and made the 2 tracks paid DLC, but not just as individual items for $5 or something, they buried them in themed $20 packs that included cars lots of players wouldn't be interested in, but had to buy just to get the tracks.
I hope they clarify what post-release content will look like... Cutting down to 20 tracks is a big blow to the series, especially for those who play constantly for multiplayer and organized racing. I won't be surprised if they don't tell us anything though, or if they only add like 2 tracks.
What's better, a live service Forza Motorsport that you buy once and over time it grows?
Or buying a new Forza Motorsport every two years and "earning" the same cars all over again?
I think that depends on how good of a job they do with the game at launch and how willing they are to actually improve things and add new tracks, or if they basically just add cars and kinda neglect everything else. If they nail everything at a fundamental level, the physics, the tire/fuel strategy implementation, the draft, the penalty system and so on, then as long as they are adding tracks too then yeah it can fit with the live service model well.
If they don't nail everything and miss out on core features like they have in the past, then at least then we had a "eh maybe in the next game 2 years from now" reason to be hopeful. If the game is going onto a longer cycle, then knowing we will be stuck without things or with glitches or missing features for even longer isn't great really.
I just hate the idea of the same weekly playlist nonsense from FH4/5 with repetitive arbitrary "challenges" and a bunch of timed exclusive cars that we can only earn 1 of unless we grind for credits to try to snipe one in the auction house. I really hope they come up with a better system with more freedom in how you play to earn things. They should reward you for playing the game in general, not only for driving a certain brand at a certain track in a certain mode or whatever.