Great thread and lots of great opinions.
Here in the US, we have a lot of different venues. Some think certain obstacles are dangerous and therefore, don't have them. Others do. The breakaway tire and rubberized contacts are the newest things. Oh, as is weaves spread apart a bit further. As always, there will be die hards who want things to stay the same and others who want everything to change.
For myself, when I see dogs get tangled up in the chute, it's usually because of the angle the dog is coming out at or it's windy and the chute gets tossed a bit. I have seen dogs get hurt is on the barrel part. I would think keeping a straighter exit would help with tangles. Ditto with the tire. It's usually an early jumper (straight on) or a handler that is trying to slice the tire. So, I always wonder, if courses were designed with a bit more safety in mind, would that help? Or not? I'm just grateful to not have seen any major accidents.
I'm with the people who say, with any sport, there's always a chance of getting injured. But IMHO, it's you that has to decide where you draw the line for your safety and the dog's. For example, I don't trial in the rain. Koji doesn't have a strong rear-end awareness and has slipped off equipment if it's wet. I'm a total klutz. Forget me running in the rain, I'll probably slip and hurt myself. Oh wait. I have slipped on wet grass.
And an example of an accident that no one could have prevented. It was a nice sunny day. Koji and I were running well. Not sure why, but Koji looked at me as he tried to take a jump. He took the jump down. He hit the side of the jump and the pole, the whole jump fell over. Here's an 18" tall dog, jumping over a single 16" jump and basically hitting the side of the jump. He was fine, but obviously I was shocked that he hit the jump like that.
We won't even discuss me falling, almost taking out wings on the jumps, or almost smacking into the tire. LOL. If anything, I'm more likely to get hurt than Koji. He's definitely more agile than me.
BTW, not sure if this is all venues or which one, but aren't we now switching over to plastic cupped jumps? Too many dogs getting hurt on the metal cups due to tight turns/jumps.
I think it's all a matter of being safe, w/o going overboard and completely changing the sport.