why? nettles and taproots are found with beggining explo*perc.
Hope you don't spawn in a large grassland.
what balancing? be more specific please.
World top axe quality has an impact on the quality of several industries. Butcher>Hide>String is an important one. But you also have Split>New Stone Axe spiralling. Stone axe quality currently (many argue shouldn't) impacts the quality of the best stone/ores you can harvest due to tool capping. This would also have a direct impact on several industry buildings and future stone tools by the impact of best Q stone. Stone axe quality impacting stick quality also pops up as a viable fuel source for some things.
Overall, I'd predict that early game string quality will speed up the entire metal industry since your top Q string is generally close to stone quality. It would help drag up lower quality branches, and you could in theory use it to annoyingly spiral if you had a high quality animal node. Mid-Late game it would put more emphasis on finding high Q hide animals. Best strings would mostly come from animal nodes, but very small bursts of high Q trolls would also provide some.
Actually impacts a lot, stone axes are a core part of crafting quality.