For me, this game, right now, is perfect for me for scoring. I'm always hovering around par, and have an occasional good round.
The only aide I use is elevation. I use the hardest swing and normal putting.
The other big deal with difficulty is to not go crazy on player golf attributes or specs. I play with about 6 ticks on driving distance, and no ticks on driving accuracy or control. On the recovery sections I have no ticks, and about 6 ticks each for accuracy and control. I've made it a point to make sure that I have only a silver on Finesse, and only use that attribute when it comes up as the default type (I think with only degree wedges, which seems to be the most realistic way to use them the Finesse.)
I do not use the Flop type at all. And I'm about to outlaw the pick shot, too.
It would be nice (and fanciful) if we could have a section where we could select what attributes and spec types will be allowed, before teeing off.
I can get a straight-planned swing probably about 65-70% of the time. If users are getting a straight plane all the time, then it's time for a new controller.
I do think that for the most part if you start a new player, add a little to the distances (driving, and a spec, say, for all clubs) and play without! aids (or add nothing and play on the Red tees), then that might not be considered too easy.
But once this happens and the old random element returns, then no one will be happy.