As a complete addict, my opinion has to be taken with a grain of salt for sure, but here goes.
Yes the MFK700 is fantastic, enough that I actually have 2 of them, butin a moment of clarity, I don't think I could recommend it as the only small router. Unless you need one of the functions that it can do that the other lack, you're right, you could have at least a couple of Makitas.
You didn't mention your brand of battery platform, but since you brought up Makita, maybe you are there?
If so (and you are somewhat willing to spend a bit) I would go with the corded Makita with the multi base kit and at least one of the cordless units. This gets you into the best of both worlds, since the bases interchange. The 18v cordless is very handy, but it has limitations that the corded version can overcome. This also allows for different bits to be set-up at the same time as Bert mentioned above.
That said, I would have a very hard time without a MFK700, but that is because of the nature of my work. It depends entirely upon what you do in your shop. The horizontal aspect of the MFK700 is invaluable to me, maybe completely useless to another?