Really does no one consider the possibility of making the GUI a web application that runs in browser on the users own machine? It would be like running an instawallet on your own computer with the possibility of entering in console commands.
The issue there is the blockchain; in order to do anything, or show the user anything, the web application needs a trusted copy of the blockchain. If it's a locally-running app, most users don't have a database program running on their local machine for a web app to hook into. As a public website that users can visit (like instawallet, or blockchain.info's wallet) that's very doable (the server also connects to the P2P network and trusts its own database records for users to query), and I mentioned that as something I'm looking into, using node, like the bitcoinjs project.
Actually I was thinking the pesron would be a running a full
LAMP setup. Albeit customised.
LAMP for a local GUI?

That really does not make sense.
No really, I have a version of an instawallet running on my local machine in a VM image that is basically a vanilla Ubuntu LAMP installation with the coind server running. I log in through my browser on my host computer and I can send, receive, check stats of the network, etc...
I know it's not the best way of doing it, but it does work.
Whatever you develop for the namecoin network it is better than nothing and the community will surely accept it positively.
Best would be a Satoshi based client for the security. However if you like and can work better in a web environment it would be also helpful.
From LAMP as I see it would be enough A+P for a web client and it would be portable for every operation system. If you make it minimalistic without unnecessary complications it will be easier for others to understand it and eventually continue your work.
Yesterday I started also to make something browser based for namecoin(just html with javascript) and I intend to release it this week.