I tried this a while back (a few months?), and it doesn't seem like it has progressed much. I think Vivaldi has a much better chance of getting somewhere. A bunch of coders doing work on a voluntary basis will have a hard time competing with teams of full-time paid engineers.

I'm surprised I haven't heard of this until now, it's made by a group of members from the now closed Opera (12) forums. There are people who are fond of the Presto version's features so I'm glad there are efforts like it.