The biggest issue I see is that reddit for the most part is links outside the site which I've noticed doesn't resonate very well here. Maybe their onboarding will change the voting practices but I for the most part see original content exclusive to Steemit being rewarded.
For better or worse, I'm not sure.
It would be great to catch reddit in the act of censoring posts about steemit..
They will become Steemians, that's the whole idea! They will adapt and feel no obligation to keep posting on reddit, if anything they would want to get followers they have on reddit here too.