As we know, the idea first started as a rumor, but then Bryan Singer (director of X-Men: Apocalypse and others) has "teased" that it might happen. I've noticed that not many fans are thinking of what the title should be called. The following are titles I came up with and created in logo form. The list will be from least to greatest title (NOTE: The reason for Fantastic Four and X-Men switching around is because if the storyline involves a bigger role on one of the groups):
4. Fantastic Four and X-Men (or X-Men and Fantastic Four)
These are the more simpiler ones, that anyone can easily come up with. Although I doubt very much the will use either of these 2 titles.
3. Fantastic Four vs. X-Men (or X-Men vs. Fantastic Four)
This made it to 2nd least due to the hero battle movies like Batman v. Superman: Dawn of Justice, and Captain America: Civil War. It does sound cool though.
2. Fantastic Four/ X-Men (or X-Men/Fantastic Four)
This is kind of the same to the first one up there, but I just think it sounds more cooler. I have been told that this sounds like a double feature of X-Men and Fantastic Four.
1. Fantastic Four: X
This is also the first title for the crossover I could think of. This could only work if the crossover is going to replace Fantastic Four 2, or be mainly about the Fantastic Four.
I don't own the images used to create the logos. These logos will appear on Deviantart, and here's the link to see my other artwork: chocovenom.deviantart.com
Do you think these could work? Got any other cool titles? If you do, comment below and I might reply to you guys. And yes, Bryan Singer, Josh Trank, Marvel and Fox, you can use the titles if you want.