I think it might depend on how much the community care about what’s “DiRT”. I don’t think the game is even having the standard rally stages like the last 4 DiRT games, every clip and screenshot shown is a multi car race with mix classes so far.
It looks like it could be real fun, but I think I'll be too busy with GT7 when it comes out to consider this game. If I play multiple games from the same genre, I like the experience to differ as much as possible, like if they came out with a new F-Zero or WipEout, or if the next NFS is actually really good.
I don't give a damn about the story/novel (looking at you need for speed) but the handling/sliding/jumping seems pure arcade fun (nice physics). After seeing Team VVV's video with various tracks and weather - raining looks outstanding and China's track is beautiful among others - this is a must buy for me. I do like and play sim racing/rally games as well (Assetto Corsa Competizione downloading for xbox one x as i write this) - not sure why that invalidates playing a great arcade racing game as this one seems to be.