Years ago when I got my SX32 (not the Pro version) I paid close to $500AU for it from some guy in England that took nearly a year to post it to me. I was really happy to have found one for such a bargain. I've been searching for an affordable SX32 Pro since the 90s, but it seems there was such a small run of them made that they're rarer than hen's teeth. Any time one pops up on eBay I have no chance competiting against all these rich collectors, who can't wait to grab that Amiga gear and stick it in their closet, never to see the light of day again until the collector dies and his neighbour smells something and has to auction all his stuff, and then finds this "useless old computer junk" and burns it to save the trouble of going through and naming it all.
With the SX32 you can play some of the most high-end Amiga games on the smallest Amiga of them all! The CD32 is physically even smaller than an A600, and it looks so nice in its console shell. People want to walk up to their TV with their consoles under it, switch on their old CD32, quickly navigate through a games menu, and impress their mates with it playing DOOM full screen with a nice framerate, or even load up a game that needs over ten times as much RAM as a standard CD32 has, like Total Chaos! Hell, you now have a 030 with heaps of RAM and a serial port, so why not link the CD32 up to another computer and go online, browse the web, chat with friends, play online games (well, not sure how well Dynamite runs over a serial/modem-speed connection, but it might be alright).
The SX32 Pro is the ultimate Amiga games expansion. Even though there are a few games that don't run well even on a 030, 99% of Amiga games, including nearly all the ones requiring a faster CPU will work on a CD32 with a SX32 Pro.
030 chips haven't been produced for many years, and will probably never be made again. There is no chance of anyone ever making a SX32 Pro replacement with a 030 unless they were to source a huge lot of second hand CPUs. The best we could realistically hope for is for someone to bring out something more like a redesigned SX32 (non-Pro) which has a socket for 8MB RAM, FPU (if the sockets are still available), Real-Time Clock, IDE or CF header, and hopefully an A1200-style Clockport, or an Ethernet port or WLAN chip on board. An extra SD card slot on the back for transferring files quicker than CD (as well as backing up and saving off of the CD32) would be possible too, and maybe even USB (for I/O devices, maybe not mass-storage). And this design is totally possible if someone with the knowledge wanted to design it, and someone with the cash was willing to invest in a run of them. There is no doubt that every unit would sell if a run of 50 were made, and it might even help drive down prices of the SX32 Pro since some people shopping for a Pro might be happy with one of these instead.