Wasn't the old standard a noncon SOS of 150? Or noncon RPI of 150? I'm pretty sure something was set at 150 and I think that's fair. Even if you wanted to say 150 in at least 1 of 2 years would be fine to allow a little buffer.
I don't have noncon numbers, but five schools ended with a SOS better than 150 last season. UNI (91), ISUr (99), Wichita (107), Bradley (120) and ISUb (121). The other five.... MSU (176), Evansville (181), Drake (197), Loyola (237), SIU (251). This is according to RealTime anyway.
So going with 200-225 or so really wouldn't be changing anything. Unless some of these were drastically upgraded by the conference schedule.
If Evansville had a schedule in the top 150, they may have at least put themselves in the NIT or at least gotten on the bubble. They should have been aiming higher than that, but at least it would have been something.
Regardless, scheduling needs to improve at a number of schools. You don't have to play a bunch of top 25 types to improve the schedule. You just have to make an effort and do some research on the schools from mid to lower tier conferences and get the best of those. Finding some mid level teams, or even lower level teams, in top conferences can help. This is where MTE's can help. Playing a bunch of bad teams in bad conferences doesn't help anyone unless all you care about are wins regardless of who you're playing.