It seems that the developers of the game carry out updates to new content which is good, but they do not pay attention to older content that is not well done. Dont get me wrong they do fix the content but months later. Liches is a good example to start as its fresh, I have seen a lot not liking them because of the stupid grind+RNG and mastery lock behind 5 forma per weapon, thats bad, really bad. Now liches are not fun to do and most likely be fixed in the future when the players get use to it and the hype goes cold so they make them easier, way easier, so people come to do them. An example of making content easier so players pay attention to it is PoE arcanes not require crafting, it was a good change but it left some player a sour taste because they spent a lot of time and resources to craft them and they didnt get compensation, so I imagine something similar would happen with the forma right now where something else or less forma is goign to be used to 'limit-break' from level 30 up to 40.
With every update they add new pointless resources just to give us a reason to go an do some boring stuff to build the new items, its annoying. I can understand PoE and OV ores but the rest after that are just why? Like I have a few million of every common resource from planets and why do I do with those? They are used in newer recepies but still why add new ones? Maybe 1-2 new per update is okay but more than that is really not needed. "What to do with my 2 million Nano-spores?"
Since the developers like dropping an update and not reading feedback on the update that just dropped, and instead of fixing and making changes that the community asks for and a lot support the idea that was suggested the developers make new content and ignore the issue at hand. Steve confirmed this by saying on stream that liches are not their focus, but the community is clearly not pleased with how the system currently is.
Another major problem is that the developers are so frustrating as they are clearly missing what the deffinition of difficult/end-game content is, they see end-game as insane grinds not difficult to kill enemies that also give us a chance to fight them, Im also not saying give us a level 500 bombard that one shots us.
Lack of story quests is also a disappointment to me, the main story is not done and its bad for a game, especially when the game has been out for more than 5 years on top of that a single story quest per year is awefully poor. "But cinematic quests take time." true, but so does railjack and 5 years should be mroe than enough to know what to do with a games story. "But they added the Leverian" the leverian should have been a thing long ago and now its just an excuse to not make main story quests and we have only 3 entries which are 2 new frames and atlas, where are the classic frames liek excalibur and mag and volt they are one of the most important frames in the game yet they dont have one.