So, it is not only a problem at tour legend level. There is only one tour legend RG, and that is a 200 cr. F9 Olympic. And it doesn't seem to fill up. I didn't enter that one because this is my first RG since becoming tour legend and I don't want to start of with a 200 cr round on a course that has proven to give me problems. I am not a top player, realistically I can shoot a top ten position every 1 out of 8/9 games.( and a lot less when it is tierless).
So... is it a problem that there is no demand for RG's at tour legend level? I don't know, but to me the problem is that there is nothing to choose from. One same option for weeks and weeks is not appealing. Nobody goes to a store that only sells one high price product.
It can't be to much effort for WGT to program some more different games per level, so why not try it out?