When users with promising projects begin to dislike the direction of the engine, I think it should be taken into account.
In my years of experience in game companies changes were made to make the community happy, after all, companies wouldn't survive without a user base.
In this case, I was quite optimistic using C2 and quite happy with Scirra work, but their lack of response to my comments made me believe that they simply dont care about their user base.
During GDC Unity announced Unity 2017 and promised features for Artists and Designers which leads me to go into that direction if changes arent made sadly. It represents a lot of work in the current state but business are business.
Hi Fraktal
I don't know if It's ethical to say it here but the C3's dissapointment was enough to start learning Unity and I have to say that I'm amazed with this engine already. It's way more complex but It's not super hard. With enough will and patient I can learn it. Also It can natively export to any platform you can imagine and It's free until you generate $100k per year.
Seriously, based on all of this the only reason someone wouldn't make the transition to unity is the lack of will to learn c# and Unity and they do an amazing job in this subject by teaching us through great official tutorials for complete beginners.
If you want a partner to discuss it and help each other feel free to send me a PM.