I like the idea of the statues, but not the implementation.
1. Arrows probably wouldn't hurt stone statues, but
2. Assuming they did... the statues have too many hit points. It's incredibly boring shooting them one arrow at a time for so long.
If these are statues protecting the druids, then maybe there's a special druidic way of passing by the statues? Like wearing the circlet or some such.
Exactly my point, along with the whole "stealth is exactly what the statues should be protecting against" thing. I mean, what enemy who finds a secret passage is going to go traipsing through? No. They're going to be sneaking their way in. So what's the freaking point of the statues other than to be incredibly annoying to the player?
And yes, arrows should not kill them. That's absolutely insanely stupid. I could shoot arrows and crossbow bolts at a stone statue all day and at best chip it. I would never be able to destroy it in a massive explosion of boulders that land on top of the goblins and they just don't even respond. It's stupid.
I love the idea. The statues are cold and dark. They are receded into the wall so people won't even know they're there. As you get close, they light up and shoot you. Awesome concept! However, there should be a puzzle, at the very least, to disable them, or a skill check. Or, like you mentioned, the circlet of nature needs to be worn by at least one member of the party. The last idea makes the most sense. You can't even access those tunnels unless you acquire a Circlet of Nature from somewhere. Maybe you need to acquire it from the Heart of the Grove where a careless druid has left it sitting on a bench or table. Maybe you have to acquire it from Nettie or Rath because you agreed to help save Halsin and thus proved to them that you are a friend of the druids. If you are a druid character, maybe one of the druids just gives you one to welcome you as one of their own.
Whatever it is, they need to fix the statue traps. They are super incredibly annoying, and I had to reload at one point, even still, after 500+ hours of gameplay, because I thought I'd finally slipped past one, not wanting to destroy it because it's annoying, and it shot Lae'zel and killed her. Then, for some reason, the game kept me on Lae'zel as opposed to other characters, and it continued to pummel my entire party as they all stupidly scrambled around Lae'zel and died. Frustrating as heck and had to do the whole dang secret tunnels all over again just because I didn't want to sit there and annoyingly shoot them with arrows.