Hi @Holger,
Nice to meet you. Did we meet very briefly IRL in the Community Feedback session on Thursday afternoon during Happy Hour at AtlasCamp last week?
Re: collection of bugs which are important for add-on developers: thank you for pointing this list out. I do know @pvandevoorde has been working with our ecosystem team on prioritizing these reported issues, but at this time all I can do is acknowledge the thread, no feedback on timing of addressing them–which I further acknowledge is an unsatisfying response. 
Thank you for bumping the thread for my awareness. I’ll make sure to mention in our debriefs happening over the next couple of weeks.
-delyn