Track looks good and is fun to drift around, but the racing layouts are an afterthought at best. The (small) grids are not on the actual circuit, so on Tsukuruma you lose the first lap of the race just entering the track. Whereas on Reverse you have to make a sharp turn at the start.
The Pallete Nasu layout is even more baffling, as the racing line inexplicably cuts a corner then completely skips the start/finish line so the lap never ends.
There's also no collision on surrounding objects like the billboards (same problem on other 90sGDS tracks) to keep you in the circuit if you have an accident.
The layouts need new grid spots (at least kart-size) on the actual straights and Pallete Nasu needs a proper racing line. It doesn't matter whether the grid lines exist in real life, this is a racing game first and foremost.