[ctorg]

The way I see it, there are two approaches one could take.

One would be to combine the databases into one and run it as a single league. Since you're limited to two subleagues, you'd have to get creative about how to align the teams. For instance, you could have the AL and NL in one subleague, as divisions, and the PCL in its own subleague, and set up some kind of playoff structure based on that.

The other option is to keep the leagues separate. This might be more historically accurate in terms of structure. You'd have the two separate databases, and you'd have to edit them so that guys who start in the PCL are only in the PCL database, whereas guys who start in the MLB are only in the MLB database, and allow free agents (maybe trades too?) between the leagues.

I'm a fan of alternate reality scenarios, so I could envision having something more like the first scenario above, with fictional but theoretically viable expansion over time.