Interesting for sure, I would be completely fine with Anakin appearing as a Force Ghost, in fact I kind wished it was him and not Yoda (much as I love Yoda) that appeared to Luke towards the end of The Last Jedi. Surely there is no one better to give Luke advice than his Father who has been through all this and worse previously? Saying that, Christensen isn’t that popular amongst certain Star Wars fans for his pretty wooden portrayal of Anakin in the prequels, at the same time, there are some fans who love him.