Buying delve flares is annoying

Hello, hope you're all doing great.

Due the recent changes on fossil availability, I'm breaking more walls, but I find myself having go to buy flares too often, I mean, every medium sized path demands going back. Delve wasn't made on the era of QoL, we could address this now.

I know the devs usually come with better solution than players, so, issue addressed, below I'm going to give some ideias anyway.

1) Easiest, let us buy flares and dynamite on the cart. Can even make it an extension to the machine at site, we're all grown ups, don't need Niko overseeing we pushing 'buy more' button.

2) Fairly easy I guess: Autofill option, check a box so every end of node it buys more.

3) Biggest change, but cool, make flare and dynamite a skill with CD. I don't think the azurite spending is relevant anymore, so we can simply get rid of it. For this I can see:
A) Plain CD reduction: with lvl 1 could be a CD high enough to a character walking be only able to break 1 wall on an average path (3 nodes?). Max skill should be enough to fast delvers break/illuminate anything they want.*
B) Buying Usages (like flame dash): To avoid having infinite darkness delving, we buy more usages that will refilling on an not so aggressive pace. Or recharge every node, like option 2 without azurite spending.

* Option A may allow infinite darkness delving, I like the idea of having this alternative, PoE thrives on allowing crazy shit, but I can see this simplifying bot lives enough and them exploiting it.