Hello, 

First off thank you very much for this plugin. It's very nice. I was just wondering if there is any way (or any plan in the future) that we can get a config that allows chanigng stack size by target entity type. For example, On person maybe vanilla 1k metal frag. But in TC 5k metal frag.  etc etc... This would be very nice for people who are trying to make a very close to vanilla server but still want stack sizes to help QOL. 

I read through the CS file. I see what it looks like you're doing is using category and using item to modify the games stack size within the games itemmanager. So I presume my request could not be fulfilled. Because it seems like the item manager is a global stack controller for all target entities and there is no hook that listens to when an Item is actually moved into inventory space. the only thing I can think is to extend this plugin with an override on a hook to item's being transfered into certain entities inventory space. So for example, obey all stack controller sizes. But listen to when inventory is transferred from on person into Small Box, Large Box, Coffin or TC, Check overrides. If none then use default itemmanager.

This plugin (Stack Fuel Generator (click me)) has the potential for what you're describing. I'm not entirely sure it will be able to work though, from a quick glance.