Main Quest Progression Requires Closing Oblivion Gates

This mod appears to have caused some game-breaking bugs for certain users which I was not able to solve, so I do not support it anymore. Use at your own risk! I have created another mod that does something very similar, but is completely bug-free, and I recommend you check it out.

---Spoilers for the Main Quest all over this page---

This mod adds a requirement that you close a few oblivion gates before you can progress to certain stages of the main quest (in addition to the other objectives). It makes a lot of sense to me that being a Blades agent, the hero of Kvatch even, during the Oblivion crisis, should include a lot of, you know - fighting Daedra, protecting Tamriel from the invasion, closing shut the jaws of Oblivion, that kind of thing. For some reason the main quest in vanilla really only has you close like 3 gates and that's it.

I thought this change is a great way to fix a number of problems at once:

- It slows down the pace of the (very tense) main quest slightly, adding some breaks that give you much-needed time to develop your character, join guilds, do side quests and so on.

- It pushes you to explore Cyrodiil to find those gates that you need to progress. You will not receive quest markers for them, so you'll have to explore (you won't have a problem finding them though).

- It gives a reason for you to venture into Oblivion - since there are almost no quests in vanilla that send you to (the randomly-generated type of) Oblivion gates, your only reason to enter them was "role-playing a hero". Not anymore.

- It adds a little flavor to the Blades as a faction, as I imagine them fighting Daedra and closing gates all over Tamriel, and you get to take a part in that.

As for the actual quest changes,

- To progress to The Path of Dawn quest, you'll have to close 1 oblivion gate (after the Kvatch gate). You can do this at any time after the assault on Weynon Priory, both before or after reaching Cloud Ruler Temple.

- To progress to Spies, you'll have to close 2 oblivion gates. You can do this at any time during or after the quests "The Path of Dawn" and "Dagon Shrine".

- To progress to Blood of the Divines, you'll have to close 2 oblivion gates. You can do this at any time during or after "Spies" and "Blood of the Daedra".

- To progress to Miscarcand you'll have to close another 2 oblivion gates. You can do this at any time during or after "Blood of the Divines", "Bruma Gate" and "Allies for Bruma". The Bruma gate itself won't count for this. Gates you choose to close for the other towns during "Allies for Bruma" will count for this, except the Cheydinhal gate (because it's a unique Oblivion realm with a unique quest).

When you return from Miscarcand things start to seriously escalate, so there are no more brea