What are your most haves in a texas hold'em platform?

[gweedo]

As many know as side project I am building my own implementation of a html5 and websocket poker server. With any project I build like this I do research and I ended up playing with and on many poker servers so I can get a good base of what it should have. But any features that are unique that you want.

Just for FYI, I am not going to implement a whole HUD, but you will have access to your data, maybe even some apis after the project is stable