Just because your handling of the xenomorph was poor doesn't mean its run its course, Ridley.
How about just tell a great story. After Prometheus it was "focus on the aliens", after Covenant it's now "focus on the androids".
How about craft a great story? Stop trying to focus on one component! If it's got tons of aliens in it but it's good, then so be it.
Prometheus' problem wasn't a lack of aliens, and Covenant's problem wasn't the inclusion of aliens(although Big Chap being tacked on at the end felt rote and uninspired; the weakest part of the film).