Bo1 intermediate really doesn't depend on luck that much, far less than something like t17 or shopper. But as always, it depends on the map, and people who don't play the scheme much tend to pick easier maps without realizing it, which is why I'd suggest caves as a standard (and there's not much problem with variety here, considering people play t17 and elite on only one type of map 99% of the time).
As MI said, I doubt it would be played in free league, since people would probably choose to play nnnl over a side-league here if they had such a hankering. But in the main league it would have more importance, and just like hysteria, people would start picking it more and more.
The main problem is really just new-scheme-phobia, but there's no way to introduce a new scheme without this happening. People are afraid of learning something they're not already good at, but like with hysteria, sometimes this shouldn't be that much of a factor, if a scheme has really become popular on WN and proven its worth in terms of skill.