Hi,
today I've shown Routerboard performances to customer, he said:
"Really nice product, really cheap and full of features. But I prefear use my super-expensive hardware because it's much more easy!".

I think RouterOs would be easier to use during the time, but compared to other hardware I can say it's true.

So, looking to webcfg interface, why not make a full-custom web interface?

I mean, let's suppose I need on a Routerboard to set ONLY Ip address, I could load (as root user) a simple webpage containing the form "IP address" and the button "Apply".
Through the form I could load the IP address string, then check it through javascript on the webpage, then apply setting through button code.
The same way I could show directly an interface status on the webpage.

Then guest user can only load webpage and set IP address.
I think it could be very cool.....

Or mayme would this be already possible?
Thanks.

Take a look at webFIG. It can be customized quite a bit, and you can remove things you don't want on it.

http://wiki.mikrotik.com/wiki/Manual:Webfig

I already know Webfig, but I would something more... "custom".
I mean something similar Webfig, but made directly by user.

Something similar to web control for VLC media player: there are scripts in java (made to control VLC) placed by user in a full-custom webpage.