The only thing I wonder is if they were either holding it out of respect or just fence sitting for a bit when Gibson came up. It seemed like forever at the time but Gibby turned pro just 3 years after the Giguere trade. Wouldn’t explain why they haven’t assigned it recently, although it’s also just possible they haven’t had a goalie who’s wanted it since.
They also could’ve just changed their mind. At the time it made sense why they didn’t give out 35 or 27, Teemu had to be first in the rafters, but maybe since they’ve realized their criteria for a number retirement should be pretty stringent and now that they’re looking at 5 slam dunk cases it’s best to keep it that way.