A Court of Mist and Fury question

I started shipping Nesta with Cassian from their first meeting. I curious what would happen to them.

I think the thing we're all expecting the most is Tamlin trying to make amends and Feyre playing along with it and getting a few stolen kisses from Tamlin. I think from reading other comments on other ACOMAF sites most people expect the mating bond and vow between Rhys and Feyre give them some sort of connection so they can maybe talk mentally of some sort. Feyre will definitely have to keep up the act of being totally innocent esp. to Lucien and she'll have to pretend to love Tamlin while meddling with his affairs and bringing down the Spring Court. One of my FAQs is Who will become the new High lord of the spring court if Tamlin dies in ACOWAR? Please tell me what you think!

I think that Feyre will obviously continue to pretend to be in love with Tamlin, and try to figure out all she can about what he and the King of Hybern are planning. I love the fact that Lucien is so suspicious of her! I think it's going to be hilarious/ a comedy relief watching them interact with each other and her messing with him. One thing that everyone talks about is how they are guessing Tamlin slept with Ianthe on Calanmai, and that Feyre will have to pretend to be pissed about it. I think the opposite though. I think that Tamlin was too upset about loosing Feyre, so he refused to participate in Calanmai and because of that the Spring Lands will be dying/ wasting away.

Other than just things going down in the Spring Court, some theories that I have about what will happen/ what I want to happen are:
1) I think that Tamlin will get some kind of redemption arch, and possibly die in the end by sacrificing himself to save Feyre.
2) I think some of the high Lords may ally themselves with Feyre in the coming war, and some will try to kill her because of the power that she has from them. I really want Tarquin and Rhys' to become friends/allies in the end also.
3) I do not know how it would happen, but if Tamlin dies then Lucien would become the High Lord of the Spring Court (with hopefully Elain as High Lady).
4) I really want Nesta to be the one to kill the King of Hybern, because of the promise that she made when she was thrown in the Cauldron. If she does kill him, I've seen some theories that she could possibly become the Queen of Hybern.

Something random: but I really want explained in the third book from Tamlin himself maybe, WHY he betrayed Rhys and told his father where Rhys' mother and sister would be. I mean, they were friends before, right? Why would Tamlin all of a sudden just help in killing Rhys' family if they had that relationship?

I have seen theories that feyre will use her powers to break into tamlin's mind. i rather hope that wud be true.
so they will be having a discussion n Tamlin will be like, NO FEYRE YOU ARE NOT MEETING THE KING OF HYBERN. n she'll break into his shields n then a sec later, he'll be like, Of course you can come feyre, we need you there!
n poor Lucien will just be looking at it all, not able to say anything.