This might require a phone call...But, yes, I'm pretty sure that's possible....if I understand you correctly. I don't have anything set up like you're talking about, but I have essentially the same thing in a toolbar flyout (which I've only recently started). Here's my toolbar and below are the macros behind each button. The macro is what you'd put behind each slide instead of inserting a block. Imagine the slide as a bigger, highly detailed toolbar button.
LispRoutines^C^C(load"O:/Drawings/Menus-Blocks/LISP/CASE.lsp") CASE;\\;u;;
^C^C(load"O:/Drawings/Menus-Blocks/LISP/MCR.lsp") COPROT;
^C^C(load"O:/Drawings/Menus-Blocks/LISP/MCR.lsp") MOVROT;
^C^C(load"O:/Drawings/Menus-Blocks/LISP/SL.lsp") SL;
^C^CAPPLOAD;