i was browsing the internet to find a suitable game editor software for my diploma thesis; i previously worked with vvvv, which is a flexible toolkit, but unfit for game development. my criteria were speed (for fast prototyping), usability, a modern concept, reasonable maturity & stability, and i preferred open source.
the usual 'all-round' suspects failed to impress (either not modern or too expensive), and the majority of other editors are very specialised. i was already down to trying obscure alpha software when i found construct. i can't exactly remember wether it was by flipping through the entire sourceforge catalogue or by clicking every link on another 'game development software' list, but yes, it was at located in the desperate lower ends of the internets. i really don't know how you managed to hide this gem so well, but i guess you're right about a low/moderate amount of users being helpful for bugfixing - i hope we really are :)
(to be fair, i also fancy the z game editor, but it has a very different mission statement and does not sport the speed/usability i need at this time.)