A lot of people say game is plain rn. Yes, that's the point of current dev stage
In interview Joao said that they purposefully released the game in a very vanila lackluster state. They want to see how players behave before implementing their ideas. Current lack of content is on purpose.
Expedition is in a temporary state awaiting a rework. Mode is not replayable enough. It gets boring over time & they are aware & want to fix.
Rifts are simple, but they are seen as a keystone of the game & will be worked on. Making rifts like Glutton one is not sustainable rn. But they are testing seeing how to go about it.
So instead if you wanna complain about lack of content- post ideas & feedback on existing stuff instead