I think this could have people play more cautiously,
Another way of saying that is making the game is more boring.
With the farm war early being fairly dull as-is I'm not sure that would be a good thing.
Brush was reduced at one point, and most junglers capable of bypassing ward-defense to surprise gank with no warning have been nerffed pretty heavily so they either flat out can't do that anymore, or have a huge cost in their kit associated with that power and essentially must pull off successful ganks to be a worthwhile pick.
And surprise ganks being heavily nerffed also makes sense in regards to counter-play. The general concept of counter-play is every move an opponent makes can be dealt with by multiple strategies, and strategies that aren't simply "avoid him entirely" or "stop playing the game", because and interesting game is one people play.
As-is, the brush generally sets up ganks so you can see a jungler coming 2 seconds before he's on top of you, which gives some time for clutch plays and a solid reaction without just being deleted with no warning. Being deleted with no warning has, essentially, no counter-play as the only legitimate stratagies against it are essentially to stop playing the game.
Anyways - I don't see more brush for the jungler to sneak through as adding anything to the game.
