If it is indeed the final one and they're not pulling a trick on us, I hope they go all out to make it a spectacularly entertaining finale. I feel like a problem I had with X fast that aside from Momoa who was great fun, and was hamming it up like a Saturday morning cartoon show villain, the rest of the cast felt maybe too serious and the plot felt too serious compared to some of the other ones.
Just bring back enemies from all across the franchise and and be funny about the absurdity of it all. Heck, maybe even a wink-wink joke about how "i can't believe we went from boosting DVD players to this".