The biggest problem I ran into in the current restrictions is that, well, there's not a whole lot of new moves with distribution on 1st Gen mons. The only mon that gets Cross Poison for example is Parasect. - Though Parasect is a huge winner generally with it getting X-Scissor, Aromatherapy, and Giga Drain to round out Spore. It could even use SD over GD since X-Scissor is a competent attack on a lot of OU.
Nah, I'm going into moves that would redefine the meta. The trick of it is that I'm starting from an RBY baseline and importing newer Gen moves as if they always existed on RBY Mons. Otherwise the article is basically your series, but also assuming new moves - which makes it an almost pointless exercise in "what has the best level-up movepool assuming RBY era TMs."
I decided that would be the best direction even though I though Cross Poison Crobat and Rock Wrecker Rhyperior were gonna be awesome :(
My top picks so far are Megahorn/X-Scissor, Psycho Cut (Zam for Ubers srs), Dragon Dance, and Roost. There are others (and I missed Roost in my article approval thread) but those where the most significant.