Should or not Jinbei join in as the next nakama..?

Jinbei..
A fishman..
Being the Captain of Sun Pirates..
Also ex-warlord..
Such a strong character..
Could he fit in the SH crew members as the next male nakama..?

Many theorist out there mentioned that Jinbei will ruin the monster trio if he join in..
There is a theory that speculated that Jinbei will die in this WCI arc..
Anyone can predict anything..
But should or not Jinbei join the SH crew members..?


1st time we seen Jinbei was at Impel Down where he turn himself to be cage or prison along with Portgas D Ace..
Then he tag along to Marine Ford with Luffy to save Ace..
He also help Luffy to escape from Marine Ford along with Trafalgar D Water Law..
He donated his blood to Luffy..
Luffy asked him directly to join the crew in Fishman arc but he refuse..
He need to do something for Big Mom the yonko before he joined SH crew members..
He clearly said to Aladdin, the vice-captain of Sun Pirates that he want to be beside Luffy..

What role could he fit in..?
There is theory that he will be the helmsman in Thousand Sunny..
The advantage of having Jinbei in the crew is Jinbei could help them  especially DF users when it related to the sea or water because he is a fishman..
His title as ex-warlord also is the evidence that he's strong guy..

So what do you think..?
Should Jinbei join SH at the end of this arc..?
Or there are few character need to be consider to be the next nakama such as Ceaser Clown, Pedro or even Pekoms..?

Please COMMENT below..
Let discuss about it.. ^^