There REALLY needs to be a way to craft more than one higher tier resource at a time. Having to click 40,000 times for a single upgrade is more than a little silly.
Whether that is a slightly more expensive recipe (say, 200 resource tier 1 for 10 resource tier two for example) Or an upgrade that increases the amount converted (something like a hammer that acts a multiplier for crafting the way axes/picks work for wood/ore) Tier 3 is just absurd at the moment even with an auto clicker.