If aggressive early junglers are being looked at, can we also get changes to counter early invades?

This is kind of a huge problem at higher MMR, and the main reason why the number of viable jungle champions is so small.

The vast majority of jungle duels boil down to either the first champion that gets vision winning, or one champion flat out winning no matter what, with skill having very little or no impact over the outcome.

In the match ups where you flat out cannot duel the enemy jungle, you often end up severely behind with no way to catch up, as you can't maintain full vision control of your entrances early and the enemy jungle constantly pressures your side. With the amount of mobility in the game, many junglers can easily escape a failed invade, which puts any team mates responding to defend you behind, as they lose lane CS.

Alternatively, your team mates can be prevented from defending you due to their lane being pushed in or any other number of things, forcing you to completely give up that side of the map. Once you've given it up, you're stuck in a position where you don't really have anything to do; if you gank and get counter-ganked, you're behind and will likely lose, and there are no camps for you to farm.

This makes playing jungle extremely frustrating, especially because you can't just play safely and catch up. Once you're behind, you're usually going to stay behind, with very limited opportunity to get back into the game.