Conscious Bob
Well-Known Member
I don't think there will be ghosts mostly since what are they going to do with Obi-Wan? I suppose you could try to make Ewan McGregor into Alec Guinness (they look similar enough and with makeup it wouldn't be too much of a reach), but it seems that McGregor has been up to other projects when they would be filming. Though, they could use old footage of Alec Guinness...
CGI, the special effects panacea. I'm thinking the young CGI Jeff Bridges in Tron Legacy although he did look pretty uncanny valley.