Have been using CI optimizations for a few days now, and it definitely delivers on speeding up merge time for big stacks... however since it merges a temporary PR branch and Closes the PRs that composed that PR - it breaks some of our other existing integrations.
e.g. we use Linear for ticket tracking, and it has status transitions for when PRs are merged, but not for when they're closed - so we lose that integration.
Also if you're tracking metrics around PRs merged with existing tooling (and don't want to assume all Closed PRs got merged), it will mess up those numbers.
Anyone else in the same boat? Any workarounds folks are aware of, especially for the Linear integration?