So certain talents do this already. Your abilities chage to be wider or cover more ground. Immolation abilities light you up. Some animations only trigger with the related talent like dvas clutch sheild if her mech takes fatal damage.
What if we took it a step further? Increased armor talents actually add bits of armor. Certain talents changing how the hero looks. If we sought out adding talenr related visuals to heroes. They seem to be heading in this direction already with new heroes and updated old ones, though they dont explicitly seek it out.
Varian is a great example of this. Though ofcourse not everyone is as varied as he is.