I would also rather have it in HLC, and I won't support online at all. The store I usually run games at will not provide internet to us, as the ISPs want to charge him as a corporation to install the wifi. Unfortunately its in an isolated area with no other wifi signals we can use up there.

You can code it for yourself "for personal use" only, i.e. not distributing it, but it would be a real bear to wrestle.

One of the key things that made Classic work for me was the work of people like ShadowChemosh and RavenX and Toby who created all of that user created content that extended the usability of Herolab.

There doesn't seem to be the facility for doing that in a web-based application.

I asked Rob about that in one of his Q&A sessions, and apparently one of the concerns is that, because most of the processing is happening on the server side, allowing outside content runs the risk of someone submitting code that, intentionally or not, bombs the server. I know I've written some inefficient scripts in the Editor before...

If only they had the concept of a sandbox for running scripts on their servers...