This is a great mod idea, but it suffers because you have to pick all the items you want for every startup you do. Would be better if you could pick items and then save it as a configuration.

Additionally, it would be good if you could pick a set of startup items that are fixed for the map. And then if you bring others into that map, they get those items and no others.

I've been thinking about this also but atm time is limited, however I will try to free sometime up later in the week to look at this. It will probably be 2 updates, the first adding support to define loadouts that will persist across saves then later MP support as you suggested - admin sets the items then all users are given selected items on first join.