Looks good KG.
I tried to do something similar to this using multiview... I had a shell script to search for all the slaves and list them into a huge multiview document as buttons... that bit worked really well...
The problem is the size of the list! In multiview once you've got a couple of thousand lines even in 4 colour mode it slows to a crawl, and on a real amiga the list took about half a minute to open.
Also, multiview doesn't scroll that well. It ended up being really clunky. It did work though.
Good luck with this!