First off,
Unless it's on a Wii, there's no way to replicate a swing which is the most important part of realistic golf. A "meter" just doesn't cut it. It should be the first black eye of unrealistic golf and the first indicator that this is a GAME. (...and I know True Swing is easy to cheat so please don't heckle.)
Secondly, the game, as it is, provides no incentive to advance tiers at all. It's quite the contrary. Why would a master with the best clubs in the game want to advance? To drive further? You'd have to be an idiot to want this. At least in the old tier constraint with the clubs, you had the incentive to advance to get better clubs. Now, there's no incentive with the exception of pure boredum.
Tertiary, anyone who suggests making the game harder isn't driving the championship tees or playing the championship greens and especially not both.
My thought would be to add a stricter punishment on averages on RG's when you WD or are disqualified. Many dishonest low average players withdraw RG's more than they post a score. Punish their average more harshly on RG's ONLY so it's more realistic and you'll see a big change in averages quickly. RG's give you no excuse to not re-enter if your browser or internet crashes. You can reboot and keep playing.
TMPC