Actually, Bill, I don't think there are too many players out there ranked 51-100 who would be glad to go to UConn, who meet UConn's character requirements, who would be willing to "fill in better than the walk-ons". That level of player, in the top 100 in the country, more or less, is being recruited by top 10 programs, as a featured recruit, with the high likelihood of ample playing time (if not flat-out promised said playing time). They're being lauded, flattered, etc. - they've always been the best in their school, town, perhaps even state. Not many of those "guys" are going to come to UConn if they're pretty sure their role is going to be the last scholly player or two in the rotation. When you look at the players who have transferred out of UConn over the past 15 years, there are a number of reasons "why?", but, playing time/role on the team has been one of those reasons "why?". That's not to say that UConn/Geno/CD & co. haven't found a few kids like that, but, I just don't think there are that many, and that you can simply pick up one or two when you want 'em.
For what it's worth, I think the same thing applies to walk-ons. There's been some mention of "why didn't we get a volleyball player or two" as walk-ons. When you think of the tremendous commitment needed to play at UConn - physical, mental, time-wise - I think it's more than a bit presumptuous that there are tall, talented players just willing to give up another sport to be a non-recruited player for basketball.
What both the "volleyball player" scenario and the "51-100 player" scenario have in common is, we assume that playing for UConn is so attractive that, sitting on the bench and getting limited playing time is so attractive that a young women, used to being very successful, is going to be willing to give that all up, and work her butt off, give up hundreds of hours of her time, give up all kinds of other potential uses of her time .. just to be at or near the end of the bench. I don't think it's as attractive as we think it is.