I'm about to use this map in my campaign, and am doing some prep-work for a gazetteer so that I can just look up difficulties and travel time easily and no waste time during a session.

I am creating Astrogation rules for use in the map, and am seeking some opinions.

I am thinking about basing the the initial difficulty on a Single Difficulty die and then adjusting the difficulty based on the system that one is plotting to. However, something I'm considering is basing the difficulty on the lowest level starport between origin and destination as the base:

A = Imperial Class

B = Stellar Class

C = Standard Class

D = Limited Services

E = Landing Field

X = None/Unexplored

Thoughts?

Difficulty modifiers are:

A = No modifier

B = No modifier

C = +1 Difficulty

D = +2 Difficulty

E = +3 Difficulty

X = +4 Difficulty

+1 setback die per system travelled through

+1 upgrade upgrade per gas cloud hex