Points distribution isn't really a simple thing.
If we awarded the full 1875 through damage hits alone, we'd have to counterbalance that massive 5x points boost with a points boost for repairing and doing other things in the game. If we only boosted building damage points, players could seriously pointwhore by simply shooting at enemy buildings all game. So if we boosted repairing points also by 5x, that would skew the rewards for killing infantry, destroying vehicles, disarming things, and small objectives like harvesting. A player who sat in the base repairing would have an undue amount of points compared to someone fighting in the field who doesn't happen to hit enemy base buildings.
We're not aiming to eliminate the team score boost, because up to this point the current points balance system between how teams should win has been working out pretty well. A team score should be rewarded substantially for destroying a main base building.