Ares is the best P2P software I ever used (and I'm using P2P software since Kazaa was new).
I really love it.
But since a few years ago I started to use Mandriva Linux and I don't find any aplication that works so fine as Ares.
Ares is great great program.
So, IMHO you should develop a Linux version.
It will be very welcome for all Linux users.
And I think this is the right moment for it,, considering that Linux is growing more and more everyday.