Ok brad! I'll try again:
When making new comics you type in a name for the group they go into, the default is "general", where all general comics go.
Next, when selecting comics on a user's comic page, there would be two bars, the normal bar listing all comics by date, and one listing ONLY the group names (no comics).
If a group is selected, then it would reload the page with a different name say,
http://www.stripcreator.com/view.php?author=Kaddar&group=general
Then, all comics in the date bar would be filtered out except those in the group selected. When a group is selected, it always moves to the first comic in the group. Or this could be an option first/last comic in group in the user's profile.
Now, for reorganizing old comics, you could make a new page in which all comics along with # order they were created. My first comic is #1, not it's real comic number. (When I delete a comic numbers would be reordered). This list could appear on the left column. On the right column, there would be two text input boxes:
Box one: input numbers, seperated by commas
Box two: input group name it goes into
As you can see, this could be used to add one comic to multiple groups, if brad so desired to add this option.