Of course its not impossible to do but its will be more difficult since as a native american you have more tendancy to loose territory than gaining some.
That´s a fault of the game I have been lobbying against for some while, mostly since I hate myself for falling prey for it too. Should really nerf CB and make the different uses more specific. A conquest war that goes well should take 5-7 provinces, but should still be abnorm. Peace should be made more around 50-70 % with only 3-4 provinces... Also by emphasising more on the different uses, like actually using trade war, cleansing or insult CB for it´s uses rather than pretext to to gain land you can´t claim (and still take too much, since you are in the war anyway). Wrote a whole bunch about it in suggestions...
My point is, limiting the loss, would benefit all and only hurt the blobbers, where the impiralism CB can save their day in the later years. But personally I would rather they made the game more enjoyable to lose a war without feeling it´s all lost, than imposing limits and penalties to prevent blobbing.
Also, IMO, tech should be overhauled to not be restricted by western nations... Just once 1/20 I want to discover america with a high-tech collection of tribes, seems to be possible with RNW now

But my point is, yes the evolving of natives did happen somewhat due to westerners going there, but couldn´t there be some way other than blobbing for natives and waiting to lose some land, in order to westernize so you can kick butt? They even removed naval and maritime ideas from natives if I remember correctly... Again some limit to stop exploit, but without adding something instead... would have done it differently, if it could work... Which would bring back ships too
I´d rather they make tribes go through difficult steps, like the reforms, starting with a very steep modifier to make them fall back at first. The steps should each remove some of this modifier, and it should perhaps be linked more to being small... Thinking about using the doom feature to make them small and then reforming society culturaly and intelectually. If done right, by a good player, they should be able be near equal to western when they land in 1/5 but in all other games, even with players they should still be some backward to them.
Would even like to link the westernization proces to their actual level they are behind, so more technerdy natives will have it easier... But also make the risk of the process more severe
