Instead of having the XP Booster being used on the first battle you play, it would be better if it would only apply to the first win you have. This prevents exp boosters from being lost due to possible bad matchmaking and would give players the ability to get the most out of their boost with the 50% exp increase to wins.
Ideally I would like the option to choose whether to apply to booster at the end of a match or have to commit to using it midway into a match but I think applying it to the first win would be the easiest to implement if anything.
When someone receives an XP booster is the only time I support camping OoB in a tank and farming kills for as long as possible. Even if you lose, you’re likely to at least get the bonus for 1st in team.
But I can’t imagine why Gaijin/DF would make the change to the booster only being used on the 1st win