new to ignition, not new to Python. since i'm handcuffed to using your "IDE", is there a way to:
Ctrl + Mousewheel.
Basically, no. Technically, possibly, via either runtime scripting or manipulating the font.properties in the locally cached JVM the designer is running in.
No.
Not exactly. On every Ignition version since v8, project resources are just files on disk; you can manipulate scripts in any text editor, or do more exotic things:
@ PGriffith thank you; aw, dang; oh, poop; oh! hot damn! excellent! and in that order. 
In some future version we'd really like to natively support external editors, but there's some significant complications to that effort. Ignition's execution and scripting environment is 'weird' 
the big bottleneck for me is decades of dev experience and a finely tuned IDE of my own colliding with 'click this button to get a path' and Jython oddities. nothing that can't be worked around, it just jams the machine for now. that and the 525 tan from the WHITE INTERFACE. 
How do you people not go blind using dark UIs ?
@pascal.fragnoud spend 15yrs in dark server rooms, editing suites, and inside the guts of machinery poking at control panels and you'll grow different eyeballs. the WHITE overwhelms when the environment is dim or dark. makes reading telltales from equipment challenging too. plus i feel way more 3l33t when i have a dark bg. it matches my dark, tortured soul. "<insert-obscure-goth-reference-here>".
I have good news for you:
lmao. nice. 
technology is a marvel; something new everyday.
Don't make the mistake of thinking Ignition is all about scripting. You've got a programming hammer and everything looks like a programming nail to you, but scripting is only a part of Ignition for most projects.
Think of it as the mortar and nails that ties complex process and UI data flows together, when the cut rock and lumber doesn't quite fit on its own. An application that fits together perfectly as if dovetailed and doweled, with hairline seams between structural members, is what you can achieve with bindings of various kinds.
oh i am aware. but i've been hired to handle the programming side of things, specifically building tools and other things to work with Ignition UIs. i am totally aware i'm parked on a small beach of this big lake. my history is building from scratch and speed was key. now speed is still key, but the build process is very different. a LOT of Ignition is not even used here because of the business model. i spent two hours on the horn with support and that was another major shift in comprehension. but since i have to stare at this screen for hours and days and weeks and months, i better be able to be comfortable doing it.