Yes, it's not good to wait until the stable release to do testing and after that submit bugs. From now on I will also get testing and sid live Debian images and report on them if I see bugs.
A possible bug I see: after install in live warzone2100 has some screen tearing after starting a campaign on free and non-free accelerated graphics - maybe the game is at fault.
Thank you for everything! You have the fastest live boot from the popular distros I tested.