Hello Pierre, always good to get prompt feedback. Thank you for that.
I skimmed through the jira ticket and would like to offer you one more scenario that would benefit from bespoken configurability of plugin usage:
- Say there is something which makes a used plugin behave erratic (say, a bug in UTF-8 parsing
).
- Reproducibly erratic
- 100s of jobs failing erratic
So the goal of this is probably more than impact on performance. It [c|w]ould also increase resilience.
Being able to firefight said scenario globally as an instance admin might be beneficial … but actually, while writing all this, i am pondering about “something, something, quality gate” 
So: Implementationwise: good luck! 
If you like, keep us updated about the reasoning behind your (e.g. the teams) chosen implementation 