Name is not so important as:
1) well-written description like Jay said
2) documentation that can be understood by non-programmers

3) examples and tutoirials for non-programmers

-- examples and tuts illustrate, explain, demonstrate the use cases
MODx should if possible please promulgate certain standards:
1) improve the ability to create packages as other people have noted this is much harder than it needs to be
2) define what files can and should go where for a consistent install experience. One addon I tried, not named here, seemed to throw files all over the place, and threw in its own CSS, I gave up on it fast...
3) do NOT put your own CSS -- always defer to the end user's site CSS -- if you want to suggest CSS great BUT have a &noCSS toggle to turn off the addon's CSS and use the site's CSS, better yet, write your code well enough that it does not require any custom CSS to work properly unless someone wants to custom-CSS it
4) I know it could make forum management difficult but as many as possible addons should have their own forum sections
5) no documentation buried in source -- all docs placed where they are easy to find -- rtfm.modx.com.
Thank you for reading this, Tom