Your plunder will severely decrease. Save up for a full switch from guilds into lv3 vols and it'll be faster than switching i promise
Since op is getting mixed responses, I will suggest following the views saying it will decrease. The people saying it will decrease are more likely to know, and are more able to trust. I personally don't know myself, but I would say they decrease. Save up for full lvl 3 col instead of guild. That should show definite increase
From a guild lvl 4 to a volary level 1, you should experience a decrease, however there are exceptions. If you want to eliminate the chance of this, just build it straight to lvl 2 or 3.
Save up. Build all sos first. You will make money faster as an sos hansel(i think) then save up. Build all volaries.
No, dont build SoS. Thats a detrimental move. If you want a full T5BC hansel, then build your SoS last.
If your going to do it one by one why not check your plunder on an eb change one guild then hit same eb and see if plunder goes up I reckon it will!
Save money until you can build a volary l2. That is when plunder should increase. I suggest staying guild hansel and save money to do the full conversion but totally up to you.