One thing I do want Fox to do is keeping pushing the story forward (with obvious retooling, course corrections, adjustments etc. of course). As we've seen with characters like Hawkeye, it is possible to build upon characters over multiple films. We just haven't able to see that besides a select few in this franchise. Being a power display is one thing, but being a one and done power display is even worse.
Deadpool can help a bit with trying to create a unified brand/universe for Fox, but they'll have to make sure those other spinoffs are hits so they're not carrying all of their eggs in one basket with the flagship X-Men film (and a basket that can only contain a limited amount of mutants it seems)