Oh so this is so weird as I get into understanding these rules.
The d20 thing threw me off, its just the old D&D system that has evolved. I thought d20 meant they had come up with some crazy rolemaster system with endless books of tables.
So this might be heresay but since this is the old str,int,wis,dex,con,char stat setup with an evolved system for handling actions what is the difference from Star Frontiers made twenty+ years ago??
Star Frontiers if I remember had a well tested actions system and the old D&D combat rounds just like d20.
Hah! thinking of the d20, 1 inch=5feet and a combat round equals 6 secs; that is almost straight out of the the original white books of D&D.