Regarding the talent...
I coached at an NAIA college that was located in a small town in Iowa. We had much more talent than the three DI colleges in the state. That was when there were three DI programs.
On one roster we had two pitchers that ended up in the Major Leagues. Our #1 pitcher got drafted but didn't sign. He was an upper 80s lefty with a great breaking ball. Our centerfielder made it to AAA. Our catcher transfered to a DI college and became their MVP. Our backup catcher signed a free agent deal with the Pirates. The best hitter and prospect on that team was the 1st baseman.
Then again, half the roster were JC transfers and included several Latin Americans.
Another pitcher from that team is now coaching Iowa Western (They won the JC National Championship last year. (Beat Bryce Harpers team) Another kid from that roster became an assistant coach at Baylor. Our shortstop is a trainer and sits in the Cubs dugout. Yet another is an officer with us at PG.
We got beat in the regionals with one of those kids who ended up in the Big Leagues throwing 96 for us that game.
There are and were even more talented NAIA teams. At the upper level it's extremely good. (Low to mid level DI with a team or two that can compete with the top DI programs) At the lower levels it can be pretty weak. (Low level DIII)