Mod support and workshop

SoT is basically a sandbox, and a great one!
But at the actual state it seem to me just the core system of a WAY greater game.
I think this game would be PERFECT for a great mod comunity, that surely would make this game last for many years, and seem to me that very few games are suitable like this one for modding.
A mod support, with (aside from just add the ability to insert custom models) the ability to insert new mechanics (weapons, npc, enemies) would be the best.
I understand that this might not even be possible, and even if possible would require a lot of changes, and not only to the code, but also to the concept and design choices (and a mole of work and money that might make the work not worth the candle), but i think that someone has to make this suggestion.