Reclaiming all goes into your kitty, and it is the hallmark of a good player to have a large reclaim fleet.
Most energy goes into overdrive. The problem with this is its a little invisible.
And no, the problem isnt new players, its deliberate parasites. Someone can make a gunship plant, comdrop without a single mex, and start comrushing the enemy start position. He can then pump gunships without taking a single mex.
But, given how terrible planes are at taking mexes, it was impossible to start air before this unless you started on a big heap of metal spots. But it wasnt that the tactic was bad- it was still possible if players shared deliberately and could be quite effective. The problem is more players who deliberately dont make metal extractors, expecting other people to do so. Perhaps a 25% or so income from your own mexes would help with this. In a situation where a player has 4 mexes and another has 12, player one would get 1+6(7), the other 3+6(9). If at 0 and 16, it would be 0+6 vs 4+6 (12). Just something to ponder, if we think communism is encouraging antisocial play.
Actually the major com rush ive seen isn't planes, is running as far as you can and boosting porc after you get a fac and a couple solars. Of course there are issues even with that(ie, your opponent catching on and sending skirmisher squadrons)
But yea, as is, Communism is an improvement.