Bump and agreed.
There is danger in pushing too hard in the adventure branch - I think - with a lot of things in this game there's still a lot of WTF moments or "experimentation" - but it seems like pushing too hard in some adventure techs will bump up the difficulty of encounters greatly.
I'm in the same boat, I researched the first layer or two of adventure tech and now everything is notable level 2 and I'm stuck at 1, and I have a sexy army that could most likely beat up that lvl 2 stuff if I could get into it without the artificial restriction. I also have no clue how to bump up m notable level - there is nothing on it anywhere that I can find and no techs that I've seen mention it. I know in previous builds I accidentally increased it.
Someone with a solid clue, throw us a bone!
As a side note, so far there are two restrictions I don't like in this game. One is this notable level thing - if I wanna kill myself hopping into a dungeon/whatever I can't handle, let me kill myself - it's part of the trial and error, or trial and victory of exploration. It just doesn't make any sense to me that I need to research the ability to kill myself exploring recklessly. The other is the 50 tile limit on cities that seems arbitrary when I think you should be able to build til you run out of land (still wrestling with that one and I'd love to see a logical reason for this limit from Stardock sometime).
I'm all for gameplay over realism and hey, this is a fantasy game so there's really no limit to what the devs can do, but still. I can see researching tech that makes you better at finding stuff to play with in the wilds (you learn how to explore better) but the whole notable level to actually interact with what you see on the map I'm not getting at all.
It's like you stumble on a ruin filled with undead and start to look around and the skeleton croaks, hey, back off buddy, you're not qualified to explore this ruin and we're not allowed to smite you into the ground, the monsters union doesn't let us beat up on nooblets.