I install comodo 2.3 firewall, did not see beta but i have some suggestions.
Aboaut activity panel:
In this panel you can see lot of connetions of some program i think good idea is to group programs (you will see only programs which use internet and you will be able to close the the all connections of the program by one click) and there can be a + icon near every program to show all conections.
Log:
some sort by high risk propably
Show in main panel or in activity what is you actual speed of download and upload
Sorry for my english. Thats all for now.