Tried to read all, there's so much, but zoned out a bit at the stuff I'm not yet at, that's alo so much 😅 But I have to say, DE, kudos - there went a LOT of thought into all that!
Really, really like the Incomplete tab! Can we also maybe get a differentiation of mods already equipped somewhere else? Or a filter option in the equip screen? If I have one in a frame/weapon that has 8/10 upgrades and want to upgrade it fully, it gives me the option to remove it from the others if it wouldn't fit. But I can't specifically select an unused one. Sometimes I have unleveled ones as fillers and would prefer to be able to take an unused one that I then level up fully as I want.
You mentioned ability videos. I think in general it would be nice to have the Warframe profile videos in game. Not sure if they'd need to be packaged with the game or only pulled locally (and then persistently) when accessed the first time or it would make sense to just use Youtube as source.
Two unrelated things:
I know this didn't gain traction on Reddit but from a technical standpoint I'd find that interesting. And the possibilities would benefit the community without sacrificing the game's or your systems' integrity: https://www.reddit.com/r/Warframe/comments/ftps98/as_a_public_api_isnt_likely_why_not_give_us_dumps/
If you're in a mission and have a host migration, afterwards the map will be off again if activated before. It also resets what's already mapped. Bad for ressource gathering.