I totally agree. Let’s look at west coast who have one of the most potent forward lines. Darling, Kennedy,Allen, waterman have played all in the same team at times. But normally just the first 3. At some point we will have injuries too as you say.There is a period we didn’t have a recognized full forward after Pav retired.
I don’t consider that having 3 (Hogan, Tabs and Lobb) meant that we have excess in this department and have the luxury to offload even 1. Even if we don’t consider injury or do down in form (both which we had), I think JLo’s gameplan would require all 3 on the field.