India, SE Asia and Indonesia are open. OE can, just like any other country colonize there or grab CoTs. Holding them might require a bit more naval orientation from OE though
I don't like huge province swaps in Europe, that's why I propose it. How about this:
Editing more than one city between session costs one stability per extra city*, if stab is already at -3 it costs 3 BB. This to reduce silly province swap deals.
* A city is a European province or a ROTW province with population > 5000
This allows for small province swaps like Tangiers from Portugal to Spain or Calais from England to France but not silly thing like all Spanish Italian provinces to Venice