Only suggestion I can com e up with is to treat it like a scenario: start the game, then colonise whichever planets you want as starting plants and abandon the rest. Save, and thre is your map.
Not very satisfactory for all situations, but...
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SE4 Code:
L GdY $ Fr- C- Sd T!+ Sf-- Tcp-- A% M>M+ MpD! RV Pw Fq+ Nd- Rp+ G-
/SE4 Code
Go to
my meagre SEIV pages to generate your own code.