They don't get screwed. They get to keep up to a +4 tome on the classes main stat. You wouldn't consider this an improvement over the current system? Or is it an all or nothing deal?
If you TR'd your STR based FVS, but got to keep a +4 tome for CHA you would still be ****ed? I guess to each their own.
And yes, it is good for some players. In keeping with the theme of TR's, since clerics remember cleric stuff, sorcs remember sorc stuff, that you could "remember" up to a +4 to your classes main stat seems like a decent middle ground.