Can you play this without Common Sense?

[neondt]

Increasing development is only something you want to do when you're capped on monarch points. And besides there are already ways to spend MP when you're capped; convert cultures with DIP, roll generals with MIL, and... well who ever gets ADM capped? It doesn't impact the game anywhere near as much as say, National Focus which was in the AoW DLC.

 

[neondt]

How much can you build without this new development system? I'm not much into painting the map I'm mostly just trying to play historically and stick to sensible borders so usually my provinces had lots of buildings.

In addition to what Chieron said:

It's only worth increasing development for the sake of getting more building slots when the total development of a province is close to a multiple of 10. E.g. if you have a province with 8 total development, increasing that by 2 gives you an extra build slot, and that can sometimes be a worthwhile use of your resources. But you wouldn't do that for a province with 11 development - the hundreds of MP it would cost to get it to 20 would be much better spent on pretty much anything else.

 

[neondt]

Western tech problems...

I bet you'll be spending most of that ADM when those wars are over though