It’s not that hard to increase the drop rate for barrows items. You’ll just have to add in some code to give a specific user a bias to roll high. I’m sure the current user is cached in memory somewhere and checking if that current user matches swampletics becomes very inexpensive to do.

If the drop tables are done up in a way that higher rolls of rng equates to more desirable drops then you can just change the utility method they use to generate the number so that every rng roll is skewed towards a higher number.

I mean this is going full blown tin foil hat. I don’t think they would even dare to do this. Someone would be sure to leak it and the community will react very badly to it.