Bumping dead thread to clarify a few things.
Specific combinations of 6 pokemon is impossible to "invent", especially when looking at things retroactively with "current knowledge". The best inventions are always intuitive when looking back (see: smartphones), and explosion teams were one of the best archetypes.
The "team" part of it isn't the pokemon but the sets. Thunder zapdos wasn't really a thing. Mono curselax wasn't a thing either. That steelix is also rarely used due to inability to hit the #2 pokemon at the time (though popular with vil/havoc/a few vets). Combining them was high unheard of. And of course vaporeon is vaporeon, if not a bit forced. I'd argue havocs team was the archetype of good explosion teams back then, with the primary true innovation being clamp cloyster. It was a collection of 6 good pokemon rather than something structured primarily around synergy, which did not exist at the time.
Moreover when it comes to effectiveness, everybody knows the most effective things are surprises. How else could something like up electric cloyster enter the meta? That's why "scouting" the team with phazer is such a big part of the game. No surprises. That's why people at the time did a lot of battles without spectators.
That's why I've always been a bit hesitant to publicly release it. It's a bit of a catch22 really -- if I used it as a guide to build an effective team, then it would be public, popular and known, thus not as effective due to losing the surprise factor. Then would I essentially be describing how to build something ineffective? Maybe. Hence why the meat of the guide is technically in allowing different options and variations to keep your opponents on their toes.
Unfortunately things don't play out the same. People see the wall of text, scroll down to the list, then net team. This greatly reduces the effectiveness of you use something predictable. That is the whole point of offering different options. Not just the vaporeon slot, it's really about the snorlax, cloyster, and exeggutor movesets as well.
Some of my favorites at the time were machamp and gengar for vapors on spots. And explosion snorlax was the number one switch up. Sets and pokemon are always going to be meta specific. What I had worked for what I faced at the time. There's no way an offensive team like that is going to stand the test of time without the person having some ability to adapt to the meta (there are literally three pokemon that get hardwalled) And if that wasn't the gist of what I inferred, then it wasn't a really good guide to begin with.