I'm having a hard time seeing what either side has to offer the other.
The trade-off that I've seen suggested here is that the members of this forum would move back to the old one if Daniel steps down but seeing as how Daniel is in charge of the old site, I don't see how the members that have embraced the new one simply coming back is worth losing control of something he probably doesn't want to lose control of. What matters is that the old site drives more traffic to newcomers. Discussions actually happen in the upper fora there and in due time, you'll have regulars on the FE side again. It just won't be the same people and if I was Daniel, I don't see why that would matter at all. The traffic exists because when a curious bystander looks for it on a search engine, that is where they are led.
On the other hand, keeping in mind that Daniel would probably not give the site away, I don't see why the members here should leave either. The site is functional and the domain name is good enough. The only thing missing is the traffic and the only way to change that is by working to get more people to come here instead. This means getting the word out but it also means that you have to have a conversation taking place in the upper fora. There just isn't much going on in the upper fora and unless people who like to argue for FE want to make that discussion happen, there is no reason for newcomers to keep the discussion going. There is literally 2 or 3 posts per day here in the FE discussion boards. Compare that to the old site where there is an abundant amount of activity in the upper boards. Every five minutes there is something else being added to the discussion there. You need people on the FE side here that actually care to counter RE arguments.
Just my 2 cents.