The time for pragmatism is when you have really tried to do something, you can't get it to work and there are other things to do if you are going to hit a deadline.
In a sense there is no deadline here.
Ady will, I'm sure make a great stab at improving ROTJ:SE and that will come out when he is satisfied he has done all that he can do but that's not the end of it for the rest of us.
There will be plenty of our ideas he won't want to do or just can't and maybe a few of his that not everyone will be happy with.
We have something that no Hollywood studio can hope for, all the time in the world.
The perfect Star Wars saga is, pragmatically impossible (you can't make everyone happy) but attempting to get there will lead to a lot more fun and success than not.