Aleš, I've tagged and been following the Data Doctors' G2G discussions for a while now (BTW, something I think is worthwhile for any WikiTreer, even if they don't plan to actively engage: you learn a lot about what's under the hood and how the engine underneath helps keep WikiTree running). I don't know how often I'll be able to make a focused effort at the weekly challenges, but I absolutely want to help clean up data...suggestions. Badge me and I'll be as active as I can.
Thanks for being a big part of that engine under the hood. :-)