The talent trees are currently very lackluster.... I don't really have any choices on where to spend my talents. Some tiers just have 5 points to put... and you need 5 points per tier, so guess where those points are going.
If you're looking at it purely as a 'hey now I feel that my companion's grown stronger!' then yeah, I can agree it'd be cool. If you're looking for it to provide more gameplay thought, no, that won't happen.