He very likely won't maintain this torrid pace, but yes, even if he falls off his current pace a bit, but is still north of 1 PPG, I'd be a little surprised to see him back in the NCAA. Say for instance that he finished around 1.2 PPG, that would still be a *fantastic* season, and I'm not sure that going back to the NCAA for another year would be the best for him. The difference with Holloway is that he already has a "man's body" more or less, as he is a pretty big kid. His size and skating are already "pro-ready". Lots of the guys you leave in the NCAA for 2+ years are kept down there to allow them to gain size and strength. Cole Caufield on his own team is a great example of that in fact, and there are lots of other examples in recent history.
Holloway will never have the scoring touch of Connor (Connor almost had 1 GPG in his draft+1 in the NCAA! crazy), but man o man, it would be nice to have Holloway turn into a comparable player overall. Holloway is a bigger man (already has 20 pounds on Connor) and is significantly faster than Connor as well. But as I said, doesn't have the scoring ability.