Oh god I hope so. for everything, I hope that it will happen, that Zun will support it, that it will increase awareness, decrease piracy. All of it.
When Reccetear came out on Steam, that's exactly why I purchased it right away even though I never even played,seen,heard of the game yet. Granted, I'm also a big supporter for ALL doujin games, not just Touhou, so it wasn't for Touhou only, but pretty much everything that applies for Doujin games applies for Touhou.
That and I'm not against more fans of the series, more fans = more fanwork which = more great arrangement bands/fangames, etc. I don't mind sifting thru the bad/meh work to get the gems.
edit: Sorry got carried away, as for what I THINK...I honestly don't know if it will happen or not, but if it did, I do think it would increase awareness and decrease piracy as well.