What landscape lol. There's a single gate. Then it's the kindgom.
Boa sisters didn't fight AT ALL bro. And it still took the marines DAYS. So they were fighting Kuja fodder. Why didn't coby destroy them all in an instant with his super advanced haki you keep talking about?
Boa sisters didn't make a difference in battle? THE MOMENT Hancock stepped out, all but one single marine were stone there. Coby would have died had BB not arrived in time. BB saved coby's ass lmao.
And, You are sleeping on Smoker. He has connections to 2 admirals. Actually, he is friends with 2 admirals. They respect him. Fujitora even listened to Smoker and that was one of the causes leading to the abolishment of the Shichibukai. He will come back and He WILL be Much much Stronger.