Here’s what’s going to end up happening. Players are going to figure out what’s best for their favorite content, slot in those conduits, and never interact with the system again until a higher ilvl conduit is earned. If they allow players to respec then they can change things up per encounter (m+ or raid boss), they can experiment, they can change class specs more freely (which is important for people who play multiple rolls, granted having 3 soul binds mitigates this), and they wont have to feel punished if the player decides to engage in both PVP and PVE content.
Blizzard likes to use the term ‘loadout’ a lot lately. Imagine if in CoD you couldn’t change your guns and attachments until a weekly reset. Just wouldn’t work. Having to commit to one build for an entire week would make the game worse, and I think the same would be true for WoW.
I understand that Blizzard wants to retain a certain identity that people can have with their builds, and it’s a good goal to go for. But I don’t think this will work.