I like the GUI when you click onto a trading pair.
When you click on markets though in the wallet you are presented with a long stream of a lot of assets.
It seems like it would be better if the top third of the screen was 'prettier' and had 4/5 Key assets. (Whatever those are, BitUSD, BitCNY, BitBTC, BitGold maybe with a little icon next to each like a gold bar for BitGold.)
The rest can be underneath or accessed via a 'other markets' tab or something.
I presume something like that will come later on as time allows? Or are most happy with the layout atm?