Playing the devil's advocate here, I say that this isn't so bad of an idea afterall!!!
Stop blaming this No-Ad scoring for ruining player development, because the culprit for player development is lack of budgeting, players not having individualized player development coaches, and players having to modify their aggressive style towards achieving team wins over individual development.
If you are a top player and need an entire set to weed out a weaker opponent then don't bother turning pro because you'll be eaten alive. Tie-breaker 3rd sets enforces a player to be able to turn it on at a flip of a switch, which is a prerequisite to survive in pro tennis, where matches go back and forth.
Furthermore, winning against non-competitive players & the element of team spirit does not prepare a true warrior for life on the tour, alone on the road, losing in qualifiers, while eating macaroni & cheese.
We all know they get fed well in their cafeterias, nicely catered to, all their expenses paid, pat on the back from their teammates & scrubs even when they lose, more importantly a false sense of confidence from winning 80% of their matches against mostly players who won't make Top 250 turning pro.
Case in point, the Top 2 players in 2013 and their records after 3 years on the pro tour:
Gibbs ranked #117 (76-58) or 57%
Embree ranked #244 (74-51) or 59%
Credit Gibbs with reaching #84 but a 10-20 start this year, battling mostly qualifiers at WTA events has her unable to defend the points she gained last year playing ITF events. Only 2 other top college players make up the Top 200 (Sanchez #173 and Brady #194).
Truth is not many college players have STAYING POWER once they finish college or if they are close to graduating. Credit Granville (9 years) and Lilia Osterloh (15 years) with staying power but they turned pro after 2 and 1 years respectively.