I appreciate these suggestions because of their candor and also because of your experience with so many automation tools and programming languages (from your detailed reviews on the web, it's clear you've tried just about everything and weighed their pro's and con's).
I think AHK needs to "clean up" on its user tools and make those more "user friendly" and "sophisticated". What, in my opinion, AutoHotKey needs is its own Editor (AHKEditor and AHKStudio are coming long, but still have far to go), a better AU3Recorder (well its own TRUE AHKrecorder w/ Control Clicks...), etc.
Concerning an AHK Editor, many users prefer to stick to their chosen editor -- such as PSPad, TextPad, or even the really basic Metapad -- because of the time they've invested in learning it or just because they like the feel of it. Even so, I realize that there is high demand for a custom AHK editor that has built-in IntelliSense, syntax coloring, context sensitive help, and shortcuts such as "Run Script" (PSPad probably comes the closest while still being free). Rather than reinventing the wheel, I think the approach taken by Jos van der Zande for AutoIt is better: customize an existing editor that already has a great core set of features and a proven history of reliability, namely SciTE/Scintilla (there may be others that would qualify).
The main obstacle is the sheer amount of time involved. It is my impression that customizations of SciTE have a much steeper learning curve than doing the same things in something like PSPad (but as a reward, SciTE offers more power and flexibility). Assuming the benefits seem worthwhile, it would be ideal to have a volunteer to do the customized version of SciTE, preferably someone with SciTE experience. If anyone is interested, Jos van der Zande's SciTE4AutoIt3 might provide some good ideas.
Alternatively, PSPad could be examined in greater detail to find out which AHK customizations it's missing, and whether it's possible to add them. If there is enough interest, perhaps a preconfigured version of PSPad can be offered as a new download (assuming permission can be acquired).