I think the R7 sounds like a nice camera and reasonable merger of the 7DII and 90D. Given the price, the compromises of the R7 seem quite acceptable.
To add a little perspective, you can get an R7 and an R5 for less than the price of an R3. If you are not a sports shooter the combination may be a better value.
Personally, the lack of a battery grip is no big deal to me. I have a grip for the R5 and never use it and I find the R3 to be a bit of a brick with its integrated grip (I realize others have different opinions, but that's mine).
I am perplexed by the R10. I'm not sure what niche it fills, other than to upsell buyers to the R7, RP or R. It seems too expensive for what it is and too stripped down for its price point.