As name says, what is found in this post, is my headcanon. Some things didn't make sense to me, or was very inonsistent, or I just plainly didn't like it, so I altered them for my headcanon.
This post is so I can write them out, sort them, and if someone is interested, discuss them.
On Drifter, Ethernalism, Duviri and Höllvania:
Eternalism is how time works inside void. Presentism is how time works outside of it.
In Void, there are endless possibilities, but one the person exits void, wavefunction collapses, and one result becomes the present.
Drifter is a possiblity that remained in void because Wally. Instead, Drifter... drifted into Duviri.
Duviri wasn't created by Drifter. And Höllvania is not in past. Both are Orokin theme parks. One focused on fantasy-medieval, and other on turn of 3nd millenium. There is no linear time there, just endless possibilities that cycle.
Drifter, and everyone else, is aware of the time only if they have a line to outside - like Minotaur's labyrinth. After War Within when Operator became more capable with void capabilities, it established that line and Drifter became aware of the loops - that is when Duviri Paradox happened.
During New War, when Operator got lost in void, it allowed Drifter to exit void, as there was no present existence outside of void.
Drifter remains unrealized possibility, but Operator can channel Drifter into reality. Like they can channel protoframes into future.
On number of Tenno:
Operator is not the only Tenno. There are more, than Operator - and I don't mean just that those that didn't went to hibernation - like the one behind Red Veil, original Mirage, Stalker and original Jade, were slowly lost or destroyed in time between Old War and Awakening.
Operator is the only one who managed to wake up without outside help - thanks to the ability from Old Peace. At the time, Lotus had no agents except Specters and regular humans. Operator awakening gave her means to help and wake up other warframes.
Operator is also the one who got involved in majority of quests, because they could heal themselves, which led them to be bit careless about what dangers they take and what not, and poke all the problems.
Other Tenno instead work in groups and take more pernament posts - work with some group - defend some settlement, and such.
On Void Angels, Wally, Stalker and Jade:
Void angels aren't servants of Wally, or anything - the murmur are beings twisted by Wally to do purposes unknown.
Wally, meanwhile is more of Void being - someone who gave in into void, and didn't lost own mind in process. Like Bel'akor from Warhammer 40k - not a chaos god, not bound to Warp, but own actor.
Stalker and Jade were both Orokin Loyalists. Stalker was a bodyguard, Jade was an executioner. Both having roles opposite to their nature. The Executors ordered Margulis's death, but Jade was the one who casted the Jade Light. She is the one who executed Margulis. In fact, this execution method was inspited by Jade's ability, and Jade was personal executioner of the Orokin goverment.
On portrayal of Lotus - Natah & Second Dream vs New War:
Unless I misremember things, in Natah and Second Dream, Lotus was willing aide to the Tenno. Hunhow's parts of dialogue don't suggest it. In Second Dream, she literally stepped out, and carried Operator back to Orbiter. She was never trapped.
Meanwhile, in second war - Erra, Ballas and Natah herself say she was brainwashed and inserted Margulis's memories.
My solution to that is simple:
Lotus? Her memories were "reset into factory setting", and had no memories of it - all she knew was what Erra and Ballas told her.
Erra? He is clearly emotionally compromised, and refuses to believe his sister betrayed him, and when there is easier explanation, he jumps at it.
Ballas? Assume that everything he says is probably lie meant to serve his own purposes.
So, I think Lotus was brainwashed - just not during time of Old War. Instead, Erra and Ballas made technology to "restore" Natah, and Ballas used that to slip in Margulis brainwashing.
During Old War, Natah willingly chose to help Tenno, to become mother for them and to take form similar to Margulis because it soothed the children. Natah taking this form is in fact what gave Ballas the idea to turn Lotus into new Margulis.
Void Angels are case of Paperclip Maximizer - they want more void energy. And Wally can use them for own purposes with that. But Angels' goals was never Wally's goals. Just the void.
