I would assume like most degredation processes in this world, the colder the temps the more the degredation process is impeded. The real questions relate to the physical state of the trichomes. What is the freezing point of the lipids that are retained within the trichomes? If anywhere near a freezer temp then will the transition from a liquid state to a solid state affect the retaining container (trichome). IMHO these are the questions I would be lloking into as we know that with less heat we get slower degredation.

For what its worth I and a few growers back in the day use to vacuum seal our stash in mason jars and store them in a cool, dark area. We smoked some samples that were about 1.5-2 years old and never noticed one bit of difference in strength. This was one hit pot so maybe there was significant degredation, but since the potency was so high to start with it was impossible to discern any differences. We had also froze some, but not for long term and they were in vacuumed sealed bags.

For what its worth, if you go to jarring and then freezing them, make sure to take the light out of the feezer. Light is definately a degredant stimulant and although it's not much, every little bit helps when your talking long term.