What should itex2MML do, that it doesn’t, currently?

Here’s an anti-feature request. itex2MML should never implement \newcommand (or any of its variants). Here’s my reasoning:

1. If done properly, it leaves one open to the \newcommand{\a}{\a}\a bug. If that isn’t allowed, then it won’t be close to LaTeX’s \newcommand and people will get trapped by the difference.

2. It would make it harder to truly collaborate. Every page with more than one editor is going to require reading the preamble just to find out what the local conventions are and that’s going to make it harder to edit something that someone else started.