Well I kinda figured I'd keep it compact, lot of planets with short distances around a single sun, sun being there for backdrop and nothing more. So far I got Geminate done and suprisingly, using the fair planets to balance out clusters of planets into equals, the gameplay is actually rather fun, even if there are too many chokepoints thanks to only having one region for now.
That single region takes about 20% of a bit larger sun's radius. So Im hoping I can make some wormhole compromises and fit 2-3 easy and fun to play regions into a single star for a slightly less laggy experience, with 4-8 players. Anything larger than that is just going to be absurd since Geminate alone has 80 planets (Systems in eve. Not going to mirror that with sin's engine.
).
Ofcourse the planetcount is going to be extreme, so might have to tweak a bit upon that but since the point is to be educational for system names and paths, maybe it can be improved upon by playing with larger fleetcounts? Afterall its probably going to be at least 2-3 combat fronts, so fast rotation of units in and out is to be expected. Also Vasari's prototype's going to be a pain to deal with, a bit like remote cyno for those whom are aware of the term, but it'll be fun to see wether I can counter it or not. Will be losing some planets to it, so much is certain. 
Well, if we exclude the massive ammount of planets it has everything Im looking for in a fun sins map so will have to keep tinkering with the concept. And I apreciate the tought myfist0 but like I said, I can't mod for life of me, so thats out. I'll leave eve models for eve mod that has ccp's permission. 
If there is one thing to mod tho it'd be jumping speed (Near instant departure-arrival) and the arrival/departure 'zones' that allow the actual process of jumping to create smaller bottlenecks between systems, and make it so that arrival is closer to planet than actual departure point, disallowing warp in and out before defense can react to it. Maybe I'll look into that once I got the gameplay where I want it. 