Anyway, about the Propeller Arena site. I was able to trawl through several URLs to find the original site's HTML files, however not a single image survived the site's deletion. Thankfully a few fan sites and journalistic sites still hold several images which may or may not have been on the official website. Using these, ReDream emulator and the original site files I was able to interpret the images as best I could. I also rebuilt two missing pages, and created two new pages of material that likely would have been added to the site had the game not been cancelled - Battle Arena's and Secrets & Unlockables.
There are still a few image issues, mostly pertaining to the Secrets & Unlockables. I haven't managed to unlock any of the additional content yet and I can't figure out how to make ReDream recognise VMU files saved to my Hard Drive. If someone can help me figure that out, or can take stills from their own save files, then please help me out. ^_^
:: ADDITIONAL ::
A bit of extra interesting information is the network.html page. This page includes some fascinating information on how the network battle system was designed for Propeller Arena. First of all, it states that Propeller Arena uses the same internet protocols as Outtrigger - a game Shuouma is currently working on. That means that reviving Outtrigger not only gets us that game (and Bomberman Online most likely), but gets us a step closer to Propeller Arena too!
The bad news where it states that to play online you need to purchase a Participation Licence, which lasts only 30 days. I know ways around licences was found for PSO, so perhaps the same system can be setup here, but we don't have the benefit of the game ever releasing for anyone to actually have a Participation Licence (be it a VMU file or soemthing else), as such reverse-engineering this section may be more complicated.
Here's the site though, I hope you guys find it interesting!