This thought has crossed my mind before, but when you lay it out like this it is soo good. It also would carry some weight into TROS for those who like it, with him reclaiming it at the end.
With how brief the shots are of Ben’s saber, I don’t think it would be too insane to replace it with Anakin’s saber. I’ll go throw some suggestions for the TFA Force vision in the TFA thread.