Many of the helicopter work methods we have now were developed and improved by expirmenters and tinkerers. Usually on a 337 or just in house and approved only by the people accepting the risk. Now you can't tinker anymore because it's near impossible to get a 337 and the regulators want you spend a ton of money to get their approval before you ever try anything.
The regulators are not often experts and yet the current system has created a need to CYA themselves from any possibility of something going wrong. I'm all for them protecting the general public and requiring an STC to sell stuff, but industry, especially in the 91 world should be allowed to tinker with new work methods and accept their own risks, it's how we learn, innovation has never been top down.
The HEC issues are a good example of this. Though virtually all the expertise is in industry, the regulators have stepped in a decided that every tiny piece of equipment must be approved before it's use by the FAA/FSDO. Now instead of finding new and better ways to do stuff (adventure) everyone is spending all their energy in trying to figure out how to please the regulators so we can do the work.
I realize it is just perspective. Some prefer a government to protect them from everything. Others like me prefer more freedom to try new things even knowing that it might not work out. I find the latter a more adventurous life and more what made me want to get into a potentially dangerous profession 30yrs ago, I don't find a boring life a fulfilling life but that just me. I'm genuinely curios to hear other perspectives.