So e2 needs to handle multiple same tsid/onid
No, because the transponder is identical so no point. I made a plugin that only scans the strong one... but that's a different story.
I just wondered why PLi never bothered to maintain these files, at least for major cities.
Actually the assumption that the transponder is identical is wrong.
In Italy DVB-T, local RAI3 versions have the same service reference. So you can only get one using enigma2
More info here (in Italian):