I can understand the concerns, but honestly the problem is not in Ports, but Surge.
And, tbh, all you could do is just reduce the power of spawned lineups in Surge, because the top guilds only get highest amount of gold against easy lineups and high power. Lowering the power = lower gold Because more stages need to be played and most just don´t waste as much time on it.
I should know - am in Top 4 guild in S1 and daily I get like 150M x 2 gold. I won´t say it´s bad though, the gold is largely irrelevant or should be largely irrelevant. Hence why I asked for Buy 100 Gold Crates or a slider. EVERYTHING IS INTERCONNECTED.
The only reason why we ask for double ports is XP drinks. One more possibility would be to only give Ultra XP in high Ports (although some players would lack it and would solve nothing at all with the economy). Or you could change Black Market / Mega Mart to “gold only” = would give players more progress for excess gold, still would be largely P2W…
Or change the XP drinks in Battle Badge enhancement to a large sum of gold (which doesn´t matter at all, really - since the bonuses aren´t 100% game-breaking)
Just my two cents on the matter. I see it, I try to give feedback on what possibilites there are.