MLBPA wants to increase the minimum salary to $775k and create a $100M bonus pool for pre-arb players. I'd say they're looking out for the younger players.
Increased revenue sharing is not going to improve competition. For one, baseball is already one of the more competitive sports with 24 of 30 teams qualifying for the playoffs in the last 6 seasons. The teams with the longest playoff droughts are the Mariners, Phillies, Tigers and Angels. None of those teams are small market, in fact the Phillies and Angels would lose resources if there was more revenue sharing.
The game's real problem is actually the lack of game action and increasing length of games. It is the most boring version of MLB I have ever experienced. The audience is shrinking because of it. MLB doesn't seem interested in expanding their fanbase. They would rather be a boutique sport for rich people and compulsive gamblers.