My problem is not with the change to the format of recruiting. My problem is with your fundamental description of how, in your mind, it would work.
The difference between mediocre HD players and good HD players is recruiting.
The difference between good HD players and great HD players is gameplanning.
The difference between great HD players and the truly elite is team building.
I don't see how a recruiting format such as you are describing would not, at least in D1, destroy the edge of the best HD players. Right now the highest-level skill in the game is planning and executing a design for your team. This is, admittedly, not a great thing if what you're trying to design is the best basketball sim. Real college basketball coaches would be happy to take the top 5 PG recruits in the country in a single class, or the top 5 SFs, etc. In the real world talent trumps the kind of team planning that matters in HD. But in the real world coaches get to build and modify systems around their players. All the strategic elements of on-court coaching are borderline impossible to simulate in a large-scale game like this. Even if there were a sufficiently elegant way for all the players to draw up offensive and defensive schemes, determine how well the players could 'learn' them given their complexity, and deploy them in-game, simulating 5 independent players and their interaction with the opposing schemes for every play for every game is just too resource-expensive. And even if you could do it, it wouldn't be interactive, so you'd still have nothing resembling the real-life in-game strategy that coaches make a living on. All of this is making the basic point that a huge driver of coaching success in the real world - actual basketball coaching - can only be very poorly simulated in a game like this. To make a good GAME, you need to add another strategic element. That element, in HD, is the team planning. If you come up with a system where it's borderline impossible to tell who might sign any of the top players, you can't really engage in high-level team planning anymore. You need to come up with a way for the best coaches to differentiate themselves in this game you're proposing.