There is another open letter addressed to the main competition, but some important issues could/should be easily asked also to Graphisoft too.
It is another sign and proof that many architects worldwide (also renowned) are struggling with tools/software that is inadequate (functions, bugs, etc.) and of poor performance.
Architects / Designers rely/depend so much on these tools on daily basis, but the relation with developers and also the responsibility of the developers to the users are not reflecting the importance of this relationship. Another culture is crucial and urgently needed!
Yes, top priority right now need to be triage based maintenance - make AC the best version of itself and start with the easy things. There need to be a substantial and continuous effort to go through the application looking for things that are upright broken and things that could be optimised, harmonized and consolidated. As @DGSketcher suggested the result of this effort should be delivered with short intervals - not bottled up to be marketed as a new feature in yearly releases.