I would too.
I am already making a web control panel.
In fact, I am done with creating the code for the server-side, although it only took 3 days with 1 hour/day of work. Remember that this application is supposed to be a relay for the existing Java HHCP server.
But I'm only 50% done with it, since it would take a lot of debugging.
The client sided web page would take much longer, since I'm new to HTML and CSS and JavaScript. It will not look as good as RTB's panel, but you can guarantee that the c-panel will not look like a website from 2002 with Times new roman font everywhere.
I will also make a way to change the Blockland server's password.
All other features found in the existing (and also crappy) HHCP will be implemented in the web control panel.
Unfortunately, the only reason I can't make add-on management easier for free users is because if I did that, who would pay for the hosting servive.? I may also consider drag-and-drop add-on uploading for premium clients. Free users will have a button they can click, and it will print instructions in the console for how to manage add-ons with FTP.