I would like to suggest having a new tab made in the options dialog to separate the GROUP aliases from KEYWORD aliases.
The reason behind this is simple. Group aliases are compromised of just that, groups of keywords in a common group. However, a keyword is specific to an application and designed to run a specific command.
While this can be done in the current configuration, it gets kinda messy when trying to add a new group alias via the right click menu. Also, the "Add to new keyword" dialog should be a bit more simplistic than the group alias addition dialog.
What do you think?