I like henryasia's analysis. Yes, things have changed, but such is the curse of an in-development game. I think you're feeling nostalgia; every so often (like now, in fact) I wish that I could go back to my clueless building of rockets with the old textures and stuff in 0.16 (and before that the 0.13 demo). However, there are still moments when I do something so incredible that I can't believe my eyes, and I probably wouldn't have experienced those without the progress HarvesteR and the team have made thus far. For me, the game has indeed gone from a funky game where you launch big barrels of explosives with little green men in them to a smart, well-developed learning experience.