Old thread with my thoughts:
https://forum-en.gw2archive.eu/forum/game/gw2/Permanent-Upgrade-Extractor
And other thread, which I suspect a moderator would close if I replied to it:
https://forum-en.gw2archive.eu/forum/game/hot/Permanent-upgrade-extractor/first#post6406018
But to surmise, I would buy a permanent upgrade extractor, that uses 1G per use, in a heartbeat. I hope Anet will consider it or something similar to allow our characters more flexibility and utility when it comes to raids.