Namecoin does not hide server location, Tor .onion service does.
Namecoin does not hide visitor location, Tor does.
Do you know bitcoin and namecoin can go through tor :
https://en.bitcoin.it/wiki/Tor#bitcoind ? I'm sure you knew it.
Namecoin needs separate DNS configuration, Tor .onion addresses works ouf-of-box, at least for Tor bundle.
So, are people forced to use unreadable and unmemorable addresses because it works out of the box ? Should they stay like that forever ? Namecoin couldn't be integrated in tor bundle if they want that ? People can't install namecoin if they want ?
I don't understand the problem with giving more possibilities.
Namecoin needs constant mining, Tor does not need.
Namecoin is secure from takeover, Tor .onion addresses also are secure.
Namecoin is interesting experiment and proof-of-concept, but there are better solutions. .onion FTW!
Namecoin is THE solution, really. All other solutions are really shit ! If Tor people didn't add namecoin into tor they are stupid. Do i need to put a smiley ?
Namecoin can make Tor URLs more "human-like"... They complement each other...