this mod has potential and could become a proper pvp for factorio. i know there have been a number of players that have requested pvp and some custom scenarios have been created to attempt to put some focus on it, but this is a very good concept, and if done correctly it can be an awesome addition to the game for multiplayer.
some suggestions,
1) although other biters are not afraid of you, the pollution you make is still absorbed by their homes and they create more biters, i would like to suggest that the pollution research machine have priority over any others for absorption.
2) better biter AI, they still get stuck very frequently
3) a follow me command
4) able to issue 'go to' commands in fog of war areas
5) perhaps issue commands to attack an area for default biters to assist you?
6) for multiplayer you pick a side at login and you are stuck with it for the duration, no more changing sides.
7) create a forum post, if not already created, for further discussion and perhaps feature collaboration.