Let me pass on something to Steinberg: in project management, this disaster of an update is well known, as a classic “final 5%” failure. The final 5% is what matters. The mechanic fixes the car, but leaves a screwdriver under the hood. The plumber fixes the tap, but leaves a mess in the kitchen. The customer will forget all the good stuff - they only see the failure.
On projects, the fix for this is to get a fresh team to begin work about 4 weeks before the deadline. They look at everything for the first time. They see what other people cannot see. This has been done with everything from software, to hydro-electric dams. Once you’ve worked on something for so long - it’s like a mix you can no longer evaluate objectively. But the fix is there. Don’t let the same team do the release. They will miss the obvious.
Try it out. You might learn something about customer satisfaction in the process, because you just washed your reputation down the drain, which is a shame.