Ok, my apologies - still half-asleep. I've not done a dungeon chest (other than hitting one with a Unlock) in almost 14 years. The loot definitely sucks on those, but there's been so many options for LP training other than those, that the only period that 99.9% of players even thought about it, was during the release of the "upgraded" Shame, because the then-new loot was chest spawn then too as a side effect of the coding for the dungeon.
I doubt they have anyone on staff that even knows where to FIND dungeon chest coding in that mess of spaghetti code (according to the ML/KR era devs, the devs from before SE almost never documented or commented in code, probably thinking that a UO2 would be released before 2005).