I think Tom Baker should play Tom Bombadil, if he is able.

40-ish Tom Baker would kill this role.

@mossyfoot

@Jimijamflimflam puts me in a tricky ethical spot when it comes to de-aging 3d technology, as Peter Jackson does have one of the top 3d studios I believe.
@Jimijamflimflam also that would get Tom Baker into the #DoctorWho, #StarWars, and #LordoftheRings fandoms.