Update :
Better Mechanics : Combat

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-- SUPPLY FLOW REWORK
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NDefines.NSupply.VP_TO_SUPPLY_BASE = 0.2 -- Bonus to supply from a VP, no matter the level (Base is 0.2)
NDefines.NSupply.AVAILABLE_MANPOWER_STATE_SUPPLY = 0.5 --Factor for state supply from max manpower (population) (Base is 0.18, this is PER MILLION.)
NDefines.NSupply.VP_TO_SUPPLY_BONUS_CONVERSION = 0.05 -- Bonus to supply local supplies from Victory Points, multiplied by this aspect and rounded to closest integer (Base is 0.05)
NDefines.NSupply.CAPITAL_INITIAL_SUPPLY_FLOW = 5.0 -- starting supply from
NDefines.NSupply.CAPITAL_STARTING_PENALTY_PER_PROVINCE = 0.5 -- starting penalty that will be added as supply moves away from its origin (modified by stuff like terrain) (Default is 0.5)
NDefines.NSupply.CAPITAL_ADDED_PENALTY_PER_PROVINCE = 1.2 -- added penalty as we move away from origin (Default is 1.2)

-- defines that are used for supply reach for built nodes
NDefines.NSupply.NODE_INITIAL_SUPPLY_FLOW = 2.8
NDefines.NSupply.NODE_STARTING_PENALTY_PER_PROVINCE = 0.30 -- default is 0.5
NDefines.NSupply.NODE_ADDED_PENALTY_PER_PROVINCE = 0.50 -- default is 0.7

-- defines that are used for supply reach for dockyards
NDefines.NSupply.NAVAL_BASE_INITIAL_SUPPLY_FLOW = 3.3
NDefines.NSupply.NAVAL_BASE_STARTING_PENALTY_PER_PROVINCE = 0.84
NDefines.NSupply.NAVAL_BASE_ADDED_PENALTY_PER_PROVINCE = 1.1
TLDR : I reworked supply to be less hard to come by but still extremely important (North Africa is Playable now)