I saw that you had made a team and then made one before I looked at yours so as not to be influenced:

C - Jorge Alfaro (Colombia) AAA Stud for the Phillies
1B - Joey Votto* (Canada)
2B - Jose Altuve (Venezuela)
3B - Adrian Beltre (Dominican Republic)
SS - Andrelton Simmons (Curacao)
LF - Yeonis Cespedes (Cuba)
CF - Mike Trout (USA)
RF - Max Kepler* (Germany)
SP - Yu Darvish (Japan)
RP - Seung-hwan Oh (South Korea)

Also considered Christian Bethancourt at catcher, Shin Soo Choo for RF, Roberto Osuna in relief, and a bunch of starters including Jaime Garcia and Marco Estrada.

Plenty of overlap in there. I think Votto, Altuve, Simmons, and Kepler are overwhelmingly representatives for their country relative to positional scarcity. Weighing players/positions from DR, Colombia, Cuba, Japan, and Korea is where it becomes an exercise in preference. And Mike Trout is like the free space in Bingo. I started with Kershaw in at SP just to be different but filling out the OF started getting more difficult. Similarly, I thought Puerto Rico would be a cop out.