Odyssey already works for AROS. If we could somehow support the making of a modernized version of Odyssey maybe that would be a better use of our time, efforts & resources. Maybe Odyssey could be better & much faster than Wayfarer.
AFAIK updating Odyssey's engine (WebKit) would be a tedious task, because it's not that isolated from the other code etc. This is why Wayfarer was born in the first place, because it was easier to design and write a whole new browser instead of trying to sync Odyssey with newer engines. Updating Wayfarer with new engines is relatively easy and it can keep up with the mainstream in that regard.
One thing seems to be the speed & resource requirements of Wayfarer. Even if we somehow managed to collect 5,000 Euros for the bounty what would ensure that the AROS version would be fast enough & versatile enough to run on older or lower-spec computer hardware that AROS supports. Why not improve Odyssey for AROS? It already works.
I run Wayfarer daily on Mac mini 1.5GHz with 1GB memory, and I have never run out of memory with it. With Odyssey I ran out of memory once a day, so Wayfarer is much better in that regard and doesn't leak memory like Odyssey does. Speed is a bit relative, in my feelings Wayfarer loads some pages faster than Odyssey, and some are other way around. Odyssey seems to scroll a bit faster. In any case Odyssey and its ancient engine doesn't handle half of javascript code on pages and it makes it faster in some situations, but then pages may fail to work. Wayfarer has much better compatibility in cost of performance, because it handles most of the code in pages. If you could get Odyssey's engine updated and more compatible, it would also get slower.
After I moved on Wayfarer, I haven't used Odyssey at all in practise. I've occasionally tried it, but it seems to get worse and worse with pages. Wayfarer is fast enough for me even with the Mac mini I'm using as a daily driver and I haven't missed Odyssey at all. By default Wayfarer writes a lot into a disk cache and that might slow down it if you don't have an SSD driver or so, but I have disabled the disk cache completely and even softlinked the whole cache directory in the Ram Disk, which I believe makes it faster in use.