The 2019 Green batches have a lot of Galaxy flavor in them, bursting with ripe pineapple, and other tropical fruits. I was chatting with one of the employees at Trillium and we were discussing how muddled beers tasted with the 2018 Galaxy. I think the consensus is that the 2018 Galaxy crop was not great. Recent 2019 Congress st isn't bad either and is much better than the 2018 Congress st., but it's no Green that's for sure. Hops like wine seem like they have a vintage characteristic and beers that heavily feature fresh hop aromas and flavors should be expected to change from year to year like wines.
I agree with your thinking re: adding some of the yeasts later. Given what was shared
Isomerization shared in the presentation about bio transformation and WB-06, plus the lack of WB-06/hefe flavors in TH, and what's known about hop-creep it makes a lot of sense to me that WB06 and/or T-58 could be added later, along with the dry hops.
I am currently fermenting a batch in a corny keg that I added the dry hop addition and WB-06 at the same time. I capped and attached a spunding valve. I did not let S04 completely finish but will try that next time.