There's quite a lot of SE Asia to conquer for 35 years. I think you are going to make a few truce breaks
You want a spoiler I take it?
I took dip tech 23 cheap with event and all the diplo idea groups I filled. With imperialism, every nation should be under 200% warscore. Even Sunda. You are still thinking in 1.9. The warscore cost of a nation like Sunda in 1.9.2 would have been WAY higher, but with MAX admin efficiency being level 27 instead of 29, means a HUGE difference.
No, Europe and asia aren't a problem.
I am more concerned with mexico to be honest, and with TIDORE. They have colonies under terrra incognita in Australia, pretty sure of it.
I found out that you can ASK for provinces that border territory you know, but that are still under this Terra incognita. But I am pretty sure I can't full annex a nation hat has provinces in middle of Oceania. No european coloniser has provinces there, I checked... But Tidore...
Hope Tidore won't ruin stuff.
Plan now is to take exploration, to CORE south east asia instead of vassalising it, and remove terra incognita everywhere.
And mexico... I'll handle them.
I got my mind set on a one nation alive one tag without colonial nations; and I *WILL* have it!
Or I'll die trying.