Private Foundations who can only take royalty depletion would benefit from having a line that specifically only tracks the royalty depletion. Since there is already a 20T1 (cost) and 20T2 (percentage) , a royalty depletion line would be greatly beneficial.
20T1 - Cost Depletion
20T2 - Percentage Depletion
20T3 - Royalty Depletion
K1X is currently working to improve the usability and design of our K-1 products. Once that work is complete, we will be reviewing ideas such as this one to implement in that new experience.