Presently, the next unlock in the research line is automatically selected when you finish researching something.
E.g. if you finished researching PPSh-41, the next match will automatically count the XP towards unlocking Fedorov Avtomat, and then AS-44.
But for instance personally I only need PPSh-41, as I don’t want to use Fedorov or AS.
Yet, if I forget to/don’t change the next unlock after PPSh-41, my earned XP is wasted on something I wasn’t going to unlock.
So it would be nice to set waypoints as flags with 1, 2, 3 sequence of what I want to be researched during my next matches, for example:
1 - PPSh, 2 - IS tank, 3 - IL plane.
Having set the waypoints, I would proceed to play dozens of matches, knowing that I am researching the things I need.