1) Mute Events.
Very simple thing. What happens if this event isn't in there? Instead of deleting and undo'ing, it'd be cool if we could just 'mute' events, so they'd not be processed at runtime, but they'd still be in the event sheet.
I think you're talking about the 'toggle events' button, on the ribbon.
2) Controller Support.
This is basically the cornerstone of it all. Support for the X360 Controller and all it's functions would be great.
This could be done by any developer using our SDK. We're pretty loaded right now till after 1.0.
4) Multi-Platform support.
Construct is DirectX, yeah, but ultimately, this'd be just frigging awesome. Being able to create a 2d game that you could then compile for multiple platforms would be the best thing ever.
We have plans for this in Construct 2.0.