Hi
my second suggestion today is to try and liven up the Arenas section.
It's somehting we already have but needs some updating, The achievements system.

Basically a reward for things like doing 10 BT's or 10 UA's, the rewards can be Dueling points and/or skill points.
for things like winning 10 times streaks you get a user-bar as well.

cool right?

yea loud we have been working on redoing achievements and such
thanks for the suggestion to consider

I got some things to suggest about that, so let's start:
1- http://prntscr.com/64eedn
2- http://prntscr.com/64eevj

too lazy to write it again xD