Today after work, i'm planning the first mapping trip, i'll walk through Sidliste Dablice in Praha and fill in the street names. Maybe even some streets are missing, it looks somewhat strange, but i havent walked through there so thoroughly yet. We'll see. But definitely there is a powerline segment missing.

Bojasova seems to be mislabeled, there are two of them nearby. I'll check it out.

Also i'll probably try out JOSM, that might take a lot of time...