Depends on the region. In Norcal the US Club circuits are more open to team based competition. Norcal Premier League is set up to be Pro/Rel at the team level between Flight 2 (NPL 2), Flight 1 (NPL 1), and ECRL. The result is very good and balanced ECRL League that is not Club based. It would be advantageous for US Club soccer and the Players to implement the same structure in SoCal. I agree that the USYS E64 and NL Pro structure is set up to break up the club monopolys, and give the underdog teams a legitimate opportunity to play at the highest levels. I hope it succeeds. Problem is, USYS needs buy in from the top performing clubs, and right now, E64 just isn't consistent enough in quality to get those ECRL/GA/EA/DPL/MLS Next teams to move over.
Like it or not ECNL (US Club) is top dog (Tier 1), and is under no threat of losing Tier 1 by any other League (not even MLS Next). This is due to the Tier 2 and 3 talent being spread out across too many Organizations (US Club, USYS, USSSA, MLS Next) . US Club Soccer has an advantage in the Tier 2 (ECRL vs. GA/EA) and Tier 3 (NPL vs. DPL vs. E64) league battle because they hold the Tier 1 spot; it is not likely ECRL and NPL are going to drop off anytime soon. USYS (E64, NL Pro) and USSSA (GA, EA, DPL) are not able to challenge the Tier 1 (ECNL) status quo because the Tier 2 players are spread too thin across too many competing leagues to create a legitimate competitive threat. USYS success or failure will depends upon the success or failure of USSSA (soccer); there is no way of taking on Tier 1, when you are fighting against three organizations for the Tier 2 spot. US Club (ECNL) will not be challenged until USYS (E64/NL Pro) or USSSA (GA/DPL) drops out of the Tier 2 competitive scene and the player talent consolidates into one organization or the other, allowing them to challenge US Club.