There are always a lot of RNG complaints when it comes to the Centra-Forge process, and some of the results you can get are a little silly (5 Effect Gums, 5 Trait Reduction Gums, Still get glow boon added), but with enough experience and a little finesse, you can work around those issues.
The ONE thing that never fails to ruin my night, is Boon Removal. How many times do I need to remove that Heavy Hitter boon, only to have it come right back once the points get re-rolled?
My suggestion is simple, have the Boon Removal effect add a slight prejudice against the boon removed, even a 5% one would do wonders, when deciding which boon to add back/add to on the re-roll. Maybe Boon Removal 2 could get a 10% prejudice. The point is, help us break the cycle of getting the same boon over and over again, losing 100 Vigour each time.