The answer....and here comes my legal training into play, is, "it depends."
If it's a really cool kit that probably wouldn't be cut as an all-new tool now, yes, I'd like to see it restored. Or if the original kit was really well-done.
Similarly, if we need an all-new kit because it was either never done or the existing molds are an engineering horror show for whatever reason (missing parts, done really wrong initially, screwed up by some variation,) then cut the mold.
Example of really well-done and that I'd like to see come back- the Monogram and MPC classics. I love those kits.
Charlie Larkin