i would propose a new way of researching wich could help the players to reseaech their favorite vehicle even faster and it wont be much different from the current system after someone researched all the modifikations on a vehicle the player gets the additional research points for modifikations as vehicle reseaech points so the points wouldnt go to waste after a vehicle got aced if that is too much than i would recomend to at least give the half of the points for research