[dmerfield]

I'm sceptical but more than happy to be wrong. Fonts are surprisingly complicated software and my suspicion is that the market of people who casually want to make them is small.

If someone interested in learning how to make fonts asked me for advice, I'd recommend he invest his time in FOSS software rather than proprietary tools which can (and do) fold and disappear. I've worked through FontForge's Beginners' guide and I'd recommend it to people with even a minor interest in type. You'll learn a lot beyond how to use the software itself:

http://designwithfontforge.com/en-US/index.html

[setr]

Personally, I would be interested in editing fonts, though I have little interest in making one from scratch; eg I like the idea of firacode ligatures, but I don’t care for the entire font (and not all of the ligature designs).

I imagine its too little to bother with picking up font forge, but an MS paint of fonts would be justifiable.

More specifically, I probably have a number of one-off usecases where a simple, shitty editor would be ideal; another example is that I like ascii diagram characters but I have yet to find a font that does all of them well. When using something like latex or monodraw, where I’ll eventually render an image of the text, a half-implented font of 12 characters that can only be built as postscript type 1 with an potentially infinitely recursive ligature definition would be exactly what I’m looking for, and a simple font designer probably gets me 90% of the way there

But I’m probably not a big market either