I wasn't sure whether to make this a bug report or a suggestion.
Make the low-end lairshaping units (imbued bars, primal essences, and excoriations) weigh 80 bulk.
With the recent changes to the resources required to make them, you can easily become too overburdened to move if you have a one-stack disk filled with one resource and your inventory filled with another. This leads to either needing to delete resources you've spent time gathering or having another player bail you out.
80 bulk means that you get the same 1:1 bulk ratio as before, and thus cannot become overburned just by crafting the max number of units possible. (The high-end is fine because 120 bulk with 15:1 resources worked already).