Coming from a slightly different angle on this---
IF you do all the proper study and prep, consider costs and benefits and etc., have some knowledgeable people evaluate your mare and any potentially good partners for her, and after all of that are confident that you should still consider breeding your Appaloosa mare....
Registered Appaloosas, NICE quality registered Appaloosas, of any type, are not currently (IMO) being overbred. Compared to the other major stock breeds-- like AQHA which registered 136,000 or so Quarter Horses last year, and APHA which registered around 30,000 Paints last year-- ApHC registered just a bit over 5000 Appaloosas in 2008.... and for the past few years, annual recorded transfers of ownership have outnumbered annual registrations. Appaloosas are a breed where people are still buying more horses than are being produced.
Just a thought on my favorite breed....
