Never yet come across a lower ranked player who wanted to play Practice, they're all about increasing their ranking; as it should be.
Not sure of why a Legend would want to play lower ranked players on T12 greens, whereas playing a Master on T10 gives them a sporting chance?
If a Legend or better feels it's beneath them then set the player rating at Legend+ when creating a multiple player game.
I run a Club that takes pride in nurturing talent. We provide Club tornaments that give all levels a chance. BUT, aspiring Champions need to be able to go out into the wider WGT world, without being crushed in the process.
Many WGT Members play little else but social golf, alternate shot or stroke play mostly. For them the more even the playing field the better. It's less about winning than enjoying the round.
Isn't that how most of us play golf in the real world; so what's so different about playing in WGT world?