Jess, because of the other point, i mentioned in my comment here, two months ago (this thing with the tight turns). Today a preview of a game was released, in which exactly this, works very well and which has a similar game-principle to Light 'Cycle Duel DX'. This one here:
https://csdb.dk/release/?id=247555
I thought I'd mention it briefly, maybe it can give some inspiration, in the point of "tight turns, that are easy for the user to implement (with no lines in between)"?
Best regards and thanks for improving this cool game. Especially the 4-player-simultan function (with 4-player-adapter) is great and a nice party-game, when friends come to visit.