I've think you've hit the nail on the head there - Negativity, which for the most part it is coming from (or ignited by) Lucasfilm/Disney - all this constant hiring and announcing project and then canceling them or simply never talking about them again, chopping and changing plans and basically feeding the internet where folks then fill in the blanks.
Frankly as a fan watching the studio say 'we'll do X' and then they don't, 'we'll do Y' and it is never heard from again - not to mention the veritable revolving door of writers and directors attached to anything and then not - it doesn't inspire any level of confidence and that is the main issue. I think a large portion of the fanbase (the cinema audience) coupled with what media critics and to an extent the investors (after a string of mediocre to massive loss making efforts on + and in Cinemas) have all lost their faith and that is when folks get negative.
If you're going to may a Rey film (or three) - own it, love, do it - but don't announce it and a director/writer and then seemingly walk it back - it's almost like they are floating the ideas out there to see if any get positive hits - it's like their panels are some bizarre form of market research
Anyway -, to be positive - A Mando film could be great and I am looking forward to that, Likewise a big movie event to wrap up Ahsoka and Rebels stories could be good and Ahsoka season 2, Andor season 2, more SW Visions are all things to look forward.
For what it is worth the idea of Rogue Squadron as a film was also appealing, following the daring do's of an elite fighter unit during the rebellion would be awesome - Dark Horse wrote a fifty issue comic run on just that back in the day - it's basically a Damnbusters in space - sounds good to me...
They just need to lock in a plan before they announce stuff, and then delivery to that plan... Simple