Worst case? He loses control and rampages through the city, but tsk, that hasn't happened in ages.

[Leo's fixed him!! Promise!! When he found him, his memory discs were shot and Festus had no sense of being. Between all the work he had done to rebuild, repair, and maintenance Festus, there was no chance of that happening. Not to mention Piper willing him to more sentience with her magic.]

Seriously. I had him working fine back home, and I can do even more now that I've mostly figured out dreamotion, so he's working better than ever. With bonus upgrades and everything!