My main concerns are:
1: Higher Tier ores being so rare.. and only one few nodes. This will create very high Prices and limit availability hugely.
- Needs to be like current. Some amounts of higher Tier Ore, uncommon but not rare on Tiles.
2: Tier 2 mining units needing Tier 2 parts to build, Tier 3 mining units needing Tier 3 parts to build, etc.
- Should be like Manufacturing, you don't need uncommon parts to build uncommon elements, you use uncommon parts to build advanced elements.