Using a sample of 1, I can certainly say there is a very high % of players in any given league that fall short of the min. requirement, but I am ok with that. The SPS number should be aspirational and people should aim to reach it. If the requirement is too low, the SPS won will just be dumped back onto the market.
Potentially what can be done for new players is that the DAO delegates X amount of SPS to new players for the first month, free of charge as it just sits there anyway. This would force the DAO to stake the SPS (DAO gets SPS airdrop) and new players won't worry about SPS for the moment. And since SPS takes a month to unstake, hopefully they will enjoy it after that 1 month and stick around.
On the flip side, all the OGs will complain that they get 0.001% less SPS from SPS airdrops.....can't please everyone.