A similar topic came up in a conversation recently and I'm interested in surveying the responses to see if they're different than what's been posted here, on Mojo, and elsewhere in the past.
I'll take a flyer though: It depends, right?
I assume you're thinking of somewhere in the SATN - there certainly are many trails there that match your description. The SATN doesn't - and correct me if I'm wrong - have the sort of stewardship governance that trails like Slaughter Creek, etc. have. So everything is kinda tenuous and ad-hoc. Some good (Thanks for the mini ramps, whomever), some bad (sanitizing, widening, and other blandification - please stop.). Certainly there are different opinions on what is fun, safe, etc. You're kinda left with consulting with some like-minded folks publicly or privately for a sanity check. Kinda just like you're doing here.
Personally, I think the strongest argument for such change that you've listed is erosion repair/mitigation of fall line trails. Those guys are just going to get worse and we should, as a community, be advocates for sustainable trail construction. Again personally, I don't care about the Strava stuff. Anyways, whomever's KOM wouldn't be made irrelevant - it'd be made permanent. 🙂 I'm much more interested in trails being fun, challenging, and most importantly, still there tomorrow.