Ok, I must confess... I had some troubles but also some fun...
The Modulation Matrix is now available. With a fancy fade in/out effect :)
It's not perfect yet (I'm not very satisfied with the Modifiers section), but that's a start.
I'm pretty sure that someday I'll have to do a major overhaul of the whole layout, but I'll wait for a couple of things that still need to be fixed before that (font selection, mainly).
Have fun!