Hey @DenkiGames,
Regarding Kickstarter, have to say I didn't even hear about it and would have willingly backed it if I'd known. So don't knock yourselves too harshly, you have a marketing issue more than a product one.
For more publicity I'm sure you're aware that Yogscast will be doing their charity stream through the month of December. Might be worth reaching out to them and seeing if they can do anything on stream. They've even published Caveblazers recently so might be open to something more cooperative.
Keep up the good work, looking forward to an opportunity to get a Steam key. Which might also be something worth considering, get the game listed on Steam and generate some buzz over there even if it's just follows/wishlists. The Devs for 'They are billions' recently did sales through Humblestore for pre-early access steam beta keys. The response kind of tripped them up it was so successful (they ran out of keys). Maybe check that out also as it would let you get some revenue before even releasing to steam. And of course it would then also generate more activity in steam from those who've bought the game.
As for depth in the game, I agree, it currently seems to be a tech tree rush, albeit very enjoyable. Perhaps having goals and unlocks linked to world objectives would help. Fulling needs is good but I'd also wonder if having hostile mobs, weather/decay etc could be worked in to add depth without it centering on just supply and demand.
Maybe even look at a modular manufacturing tier. Where people can build complete factory units rather than multiple singular machines (benefit of smaller footprint, faster production etc). Such factories could be trained in a similar manner to bots.
I'll go shut up now. Have a great Christmas & New Years.