about pit / starting grid problem
if you have league races with rolling start grid, markings for a start grid is not needed. pits are all over the track, you just need to find a right route into them, even they are in the middle of nowhere.
in layout editor you can add start/finish and sectors, so this wont be a problem for KY7 or even FE30 layouts, how many ever will be made (there are plenty of configs possible)