Rubberduck VS Bone-Market-Solver

But, with the RubberduckVBA plugin, the editor certainly becomes very usable.

I agree - it generally looks pretty clean in general. Do you use Rubberduck? If not, I'd run the Code Inspections - it will always find some best practices that you missed and you can tweak the output to your preference.

I suppose this is like the opposite of this project: https://rubberduckvba.com

It's a great plugin for VBA: https://github.com/rubberduck-vba/Rubberduck

This project is extending the VB6 IDE?

A lot of Runescape resource to XP / hours calculators. What they really need to do is replace VBA with a proper programming interface. Rubberduck VBA [1] Adds some essential features into the VBA IDE but they really just need to add C# support directly.

[1]: https://rubberduckvba.com/

The calculator from the wiki seems to only show the outcome of what you put together. I've tried working with Saklad5's Solver, but it seems 1) the program and the instructions are a bit out of sync, and 2) it's more meant to find the best skeleton possible, rather than the best one you're able to make.

Let me throw https://www.fallenlondon.com/ into the ring.

It has lots of options to acquire various items and qualities, and depending on our situation, spreadsheets can help a lot figuring out which one is most efficient.

It even has the "bone market", an exchange where you can build skeletons from various bone types, and sell it to NPC vendors, some of which have non-linear payout curves. There's an optimizer for that written in Python: https://github.com/Saklad5/Bone-Market-Solver

It's an awesome combination of great writing, bizarre, whimsical stories and a potential (but not a hard requirement) to optimize by spreadsheet and other methods :-)