The infinite leveling you unlock for the Tree after reaching Infinity is a fundamentally broken system. The high costs and low Infinite scaling for every single skill except Strength makes activating it for 95% of a run useless. Strength is the only one that is stronger with Infinite active, at least until you unlock Tier 5 Tree, where Strength's base scaling is high enough to surpass Infinite scaling. At that point it becomes worthless to activate any Infinite because, even if there were a Perk that becomes viable to activate Infinite scaling for, it's more valuable to keep the excess points for The Lord than to spend them.
And this makes the fact that every tier of Infinity lets you activate another Infinite scaling in the Tree the most worthless unlock in the entire game. If one Infinite is bordering on useless, then a second actually is useless, let alone a third or more...
You need to lower the cost for each level of Infinite for other Perks or increase their scaling. Otherwise this system is a complete waste.