It would be better - a lot better - if there was actual, reliable ethernet hardware on there, and I'd be more than happy to pay a few bucks for it.
Odroid C1+ does it a lot better for a few more bucks. OK, quite a lot more bucks, but it's much better all round. Actually the new RPi could cram WiFi on the board in less space than an Ethernet connector, which would be good enough for most of its networking needs but I suspect add too much to the cost.
The ethernet on the other PI's is not particularly reliable, and that, in my case, is the downfall of the whole enterprise. I have four pis. They all drop their ethernet connections from time to time. It's beyond annoying.
I must be very lucky as I have one which is on 24/7 as a home mail/backup/DNS server. Though it's slow for USB sharing reasons described above, it's run for over 2 years without problems. (touch wood...)