Ok, c'mon, let's keep it civil and the troll accusations to a minimum, people can have differing opinions without trolling.
Also, sogen - as you seem to be unaware, scirra is already meeting all of your points in your first post with the strategy it is currently using. They are making a living working on it full time, and therefore have a strong incentive to keep c2 from becoming abandonware. However, c2 has only one programmer, and he can only code so much so fast. Even with just one coder though, the updates are insanely fast, some other game dev tools have months or even years between updates. As many people seem happy with the free version, I strongly doubt switching to your suggestions would improve scirra's revenue. C2 is so different from many other tools, many people would likely not be able to tell how awesome c2 is without the free version.