This would be great, but I wouldn't want Festool to release a cordless version of the MFK, not with it's limitations as a small form factor router (granted it has other strengths). I want the option for a plunge base, longer bits, template routing, etc. I would want something similar to the routers released by Dewalt and Makita. I have a low level of confidence Festool would even consider it...unfortunately.
Looking at the other options, I haven't been a fan of the height adjustment on the Makita fixed base. It's crude (can't easily microadjust it). So even though I have the corded Makita, I gave the cordless Dewalt a shot. I do like the height adjustment better and the D base gives me a little more stability which I like. As soon as I sort out the dust collection connection to the Festool hose (something that's straightforward with the Makita), I'll give it a whirl. It does sound like it has less power compared to the corded Makita. Shouldn't matter for edge profiling, but for plowing grooves/dados, it might prove to be slightly underpowered.