What's map hack?
Here's some more map speculation: there is jungle on Cynheard and Pindicator's island, so I'd guess we've got polar regions and a tropical band or two. This could mean that Pindi has neighbours/trading partners to the north as well:

Or:

(apologies that these aren't fighting or square.)
On the demo screen the Exports-Imports is -15. So we're giving away five cities worth of trade (I think) meaning we're connected to 15 of Cynheard and CH's cities. Meaning with currency we'll be five trade routes short with 10 cities, seven short with 11, etc. With Pindicator the trade route icon is visible on the scoreboard but I just checked in worldbuilder and we need to have a route to his culture unfogged so I don't think we'll get them. When are those exploring boats appearing? Unfogging the route to Whosit is probably the best option...
I just noticed that Whosit is Viking. Normally I'd worry about neighboring them over the water, but his boats only start with Flanking rather than getting the extra move as standard so he needs Vassalage or Theocracy for that. Lets hope that Cheater Hater holds him off for a while anyway...
Here's some more map speculation: there is jungle on Cynheard and Pindicator's island, so I'd guess we've got polar regions and a tropical band or two. This could mean that Pindi has neighbours/trading partners to the north as well:

Or:

(apologies that these aren't fighting or square.)
On the demo screen the Exports-Imports is -15. So we're giving away five cities worth of trade (I think) meaning we're connected to 15 of Cynheard and CH's cities. Meaning with currency we'll be five trade routes short with 10 cities, seven short with 11, etc. With Pindicator the trade route icon is visible on the scoreboard but I just checked in worldbuilder and we need to have a route to his culture unfogged so I don't think we'll get them. When are those exploring boats appearing? Unfogging the route to Whosit is probably the best option...
I just noticed that Whosit is Viking. Normally I'd worry about neighboring them over the water, but his boats only start with Flanking rather than getting the extra move as standard so he needs Vassalage or Theocracy for that. Lets hope that Cheater Hater holds him off for a while anyway...
Completed: RB Demogame - Gillette, PBEM46, Pitboss 13, Pitboss 18, Pitboss 30, Pitboss 31, Pitboss 38, Pitboss 42, Pitboss 46, Pitboss 52 (Pindicator's game), Pitboss 57
In progress: Rimworld
In progress: Rimworld