Please tell us how you will be using C3 if you will be subscribing and if you are a serious game designer, small time game designer, hobbyist, educator or using the engine for some other purpose?
Also please tell us if you are a long time C2 user or new to game design or switching from some other engine to a Sciirra engine?
When subscribing I will use C3 just like i did C2 - for mobile games and desktop prototyping.
I'm by no means a "serious" game designer, i have a day job as a backend-developer and am happy with doing this in my spare time for fun, just like others do sports
But does that really matter? I think not. In the end I will pay the same dime like everyone else. I don't even see the real point in asking this. People will not make their decision based on who uses it, but on what they want to use.
I have been using Construct for a little over 3 years a lot due to its blazing fast workflow, but don't fear of using Unreal or Unity or GMS every now and then. Just whatever i'm up to when being in the game-making mood. I woudn't say i'm new to game design though, since i build up quite a big knowledge during these years and am coming from a strong developer background (10y+).