Maybe a better solution would be less gl in pre wave 30 and gradually increasing it after 30. Ezg requires better gears and diverse gears so more investment so really it should be imo the better map for farming gold. A point you are missing about the Hedo potential for income though is lootables ( elder crates are 100k)
Also I don't think e raha is 2.5 times faster then hedo especially with as you said 3k+stats and hero sab that's p1 solo hedo territory with curse. Maybe you guys are constantly doing pre p2 raha...
EZG is more fun and engaging then the phase portals too would be a bummer if we only had brain dead gl spots for real
Again just an opinion with a few truths