Thank you all again for the information. Perhaps someone else found the knowledge useful. As itn turns out, I won't be putting the card into an A3000 after all, since I just purchased a clean-looking A4000 from an eBay seller.
I was conflicted on which way to go, since I happen to think the Amiga 3000 and the original Amiga 1000 were the sexiest, best-looking Amigas ever, and I admire the Amber flickerfixer functionality and the on-board SCSI of the 3000. But in the end I decided the best way to fully replace my A1200, which I will either store or maybe even sell, is to have an AGA A4000.
I've got no idea what I will actually do with the Toaster (also bought from an eBayer), as I do my home movies on a PowerMac G5 with Final Cut and iMovie, and I use LightWave on the machine as well. I just want to play with it.