I found out what the bug is on some addon.conf maps:

there are functions in the sdk to access gametype definitions of a map,
normally they access the addon.conf definitions only,
but since 1.3, they access the addon.conf only, if the pk4 has not been loaded yet.
if it was already loaded, then it will access the definitions in the .def files.

so it would be possible to fix it by changing the maps .def files.
we could even keep the addon.conf "feature", but after talking some time with AnthonyJ, he convinced me, that addon.conf maps are not really worth it, they only cause problems, long load time, and after a mapcycle, all maps need to be downloaded anyway..
So I wanted to create a big community mappack which contains all wanted maps, in a not-addon.conf pk4 to "fix" this.

So please add your maps you want to see in this pak (if possible with a link to download), so I can put them together.

What do you think about this idea ?