Now that the series is over I've been thinking about some plot holes or questions in the 7 seasons that do not really get an answer, at least I don't think they do. The one I think is the most interesting is the whole TAHITI project, specially the base (I think it was named the Guest House) where they get the serum to heal Daisy in season 1. We are told Fury moved sky and earth in order to put Coulson through the procedure after the Battle of NY, and later we learn that Coulson himslef was the head of the whole project and he suggested it is never used again. But besides that I don't think that anything else is said about the the Guest House or the organization that it was part of.

My theory is that this was an early reference of SWORD, because how secret they are, how shield knows nothing about them and how they treat with alien stuff like the Kree blood serum. Maybe they had plans to introduce them to the show on a later season. I think that it would have been interesting to see this organization in season 5 or 6. Probably Marvel Studios didn't let them use SWORD because they were planing to use it for phase 4, as we see in Far from home post credit scene.

I would love to see the character form Agents of Shield come back in an Agents of Sword series, where maybe they could meet with the characters from the movies. But seeing how the movies have completely ignored all the marvel tv shows I don't have too much faith on it. But, who knows?, maybe it will happen someday.

If you can think of other loose strings or plot holes in the show leave them in the comments so maybe we can have a discussion about them.