I was happy to find the inline edit plug in, played with it, and want to make some suggestions:
- right now, it opens as a menu and with menu styling, which may or may not be fine - does not look great with bullet list in a standard joomla - beez2 template.
- i would not put a menu at all, and do it all with keys only.. no need to show the field name, it's in the column header
- put the edit field/drop down in place of the original value
- when hitting tab, save the value (which you do, even when that option is off) but also open the next editable field in the row...
- add a second ADD button to add an inline row skipping the need to go into forms
- prepopulate filtered fields with the filter value... this helps with related master-detail lists (when you hand build a master detail list using the content plugin)