I think that Merlin should work for ASUS, because his firmwares are better, than stock ASUS firmwares. But this new 3.0.0.4.374.4887 firmware, seems very stable at the moment!
LOL. Asus is way smarter, they let him fix the bugs for free and include features from rmerlin if they think it is cool.
It was a smart move to base asus firmware on tomato, because they can also grab some of their fixes and code.
I never believed that teddybear just stopped working on tomato. There is a great chance, that they employed teddybear to make the switch to tomato for asus and now they have a bunch of free workers.