What about toe adjustments, tweaks to parts from mishaps and just general use (plastic strain, creep, etc), replacing parts that might not be exactly identical, any drift in the electronics chain, etc? Of course it would be best to recheck end points after any change or every once in a while, but I suspect not many do routinely.

Sub trim moves endpoints. Normal trim does not. Exponential can also impact effective endpoints on some radios and if endpoints aren’t at 100% I believe. Obviously dual rate can too, suggest setting up with it maxed out.