I like the aesthetic of this and the fact that it's based on the open web, though I wish that you invested your time into making more original video games. There aren't enough of those in the world!
But about that originality.. Aren't most games really inspired by previous games, iterating on them, remixing in stuff from other games and making them better? Didn't Transport Tycoon get a lot of inspiration from Railroad Tycoon, but still end up a truly great game?
Just like Minecraft built on Infiniminer and gave a new experience, just like Terraria built on Minecraft and gave a new experience, I hope Skycraft will be able to give yet another experience. But until it gets more distinctive features than the technology itself I guess it feels quite unoriginal, yeah, I totally get what you're saying :)
tl;dr: Just wait, it'll get better!