Junior college kids and other transfers still require some recruiting effort. But, 4 jucos/transfers just moved on from the 2015/16 roster rotation, and there are currently 5 so far for the 2016/17 rotation, with 1 scholarship still open. That's a lot of playing time for short-timer upper classmen players that were not recruited out of high school. Fred left Prohm with roster problems because he never weened the team off the transfer train. Whether that is good or bad or otherwise is subject to debate with a broader scope of only wins/losses. Remains to be seen whether Prohm will continue the practice once he's had a couple years.
We don't need to sign 3-4 four star HS players every year, but to your point, hopefully we can add at least 2-3 HS kids each year. If you assume that half work out well, and half don't cut it, at least you get a foundation to work from.
Even though we have had lots of success with transfers and jucos, when you consider Monte, Matt, Georges, Naz and Ejim over our recent 5-year run, we still needed some good HS kids. Without the players I listed, we may have made the tourney once or twice in that span, IMO.