Having worked with UDK and previously Unreal 3 in the past I thought i'd weigh in on this.
At it's height, Epic had around 10 programmers working full time on the engine for each stable release and 2 Scripters working on the front end code not to mention the entire team that worked on Kismet function (the visual scripting part).
Scirra has Ashley and —
My point being; the amount of time it takes to write new features vs the rate they're expected by the user base is vastly disproportionate.
Either we have a stable engine that exports to a fair few platforms or we have a largely broken engine that has a lot of features (see the early days of Unity engine or the first few months of Unreal 4).
There's always going to be limitations to what Construct can do and the guys are simply moving the engine in a direction that will allow Scirra to keep growing as a business and better develop the product we're all paying for.
With only a couple of people working on the backend nobody can seriously expect everything in this thread to be addressed immediately and in the lifetime of C2 we've had a whole lot of new features and things the community has asked for, but everything takes time.
Personally I don't like the idea of a browser based system, but that's just it, I don't like the idea of it. Nobody can judge C3 yet and I wouldn't expect it to be in a state where anyone can judge or berate it for at least the next 12 months.