Board Thread:General Discussion/@comment-3522837-20150208144015/@comment-72.240.25.77-20150514113451

Not that I think it will ever happen, but more than anything, I wish they would introduce an option to "sell" anything in the tree back to the factory. That is the only reasonable way that casual F2P players are ever going to afford to advance through the highest tiers of the tree.

If not that, then we need some sort of challenge that would grant the ability to skip over something in the tree without buying it or the ability to select one specific item to research without having to unlock everything in its branch.