Starting V1.4 you can enable infinite horizontal scrolling. Just tick the “Wrap horizontally” checkbox in Windows settings.
When enabled, path finding engine will take into account the minimum distance across borders to choose the optimal route. Naval units will seamlessly move from Alaska to Russia coasts. Hexagonal grid will also draw seamlessly around the world. Aerial trajectories will also work.
There’s currently one limitation regarding ground-level or non-elevated lines, which are still not compatible with wrapping mode. This means that flat lines will be drawn as if no wrapping occurs. A workaround for this would be to add a small elevation amount, so WMSK will use an alternate LineRenderer which is indeed compatible with wrapping mode. Dashed lines and elevated lines use this alternate line renderer and they works in this mode.
See demo scene 507