If I look at the delegation market I think that's where excess SP could be used and with the RC pool in future. I think that 150 SP is more than enough for the average user. Businesses and these SMTs might start to gobble up the SP and secure it for resources on the chain.

I think I'm pretty much done buying Steem for now and I'm looking at other blockchains to invest in looking for other passive income streams been using MCO and CRO coin lately.