I personally would prefer the old style reactors. this is not from an issue with collecting two resources; but its reduced a key tactic in the game.
I would often pelican over some tanks to take out the enemies reactors, cutting off all access to higher level units. This has now removed that tactic.
Knowing that someone could do this forced to you think about base defence, especially in a 2v2 map when one person could engage your army drawing you away while the other hit your base from behind.