Testbed
I do use data saving bots and am just ignoring the issue right now, actually, which is perhaps stupid. But it should be pretty easy to modify RoboResearch to delete the robot.database and .data after every season, so they get rebuilt and saved data is cleared. That would be a very nice option to have. Are you using RoboResearch?
One little note, is another option would be perhaps to modify RoboResearch to enable the option in new versions of Robocode, to obfuscate/randomize enemy names?
I thought that would return a consistent name for the same bot each time, just preventing you from pre-load bot-specific behavior? I started browsing the code just now to try and say for sure, but I wasn't able to uncover the answer as quickly as I'd hoped...
A wait... it looks like the "anonymous names" are just like "#1" and "#2" according to their position in the participants in the battle... That's unfortunate, because because unlike randomized ones, that would really confuse data saving robots by giving them polluted results.
See "getAnnonymousName()" in net.sf.robocode.host.RobotStatics