In the original Morrowind, there was a large conflict between the Thieves Guild and the Fighters Guild (Which was, spoilers: controlled by the Camonna Tong). If you were a member of the fighter's guild up to a certain point, you could not join the Thieves Guild. If you were a member of the thieves guild, it made doing some quests within the Fighters guild very challenging.
There was not a very easy way to come to terms with this in a way that allowed you to take both sides. What was in place had you having to stop and go back and forth and completing certain quests in certain orders and so on.
As such, I put forward a suggestion or request that Skywind should take a look at this and try to find a way to resolve this in-game. Without, it feels as though a person could accidentally lock themselves out of an entire faction by progressing forward with another faction first. In the original game, it also feels like there is very little resolution to the loopholes that leave things lacking.
Anywho, just putting an idea out there for when we get to it. The nitty gritty of quests might still be a far way off at this point, but it's something to keep in mind once we get there