Would it be wrong of me to ask for a sort of compromise by this?

Here is the thing, truely random mechanics are either highly difficult and frustrating and wind up relying on a form of luck. Or they are as such often too easy as any bad luck can be compensated by with ease unless you get a really unlucky chain of circumstances. It also often can be boring and frustrating at the same because it really isn't so much about skill as it is shorter pattern recognition.

And there is the crux of it - anything repeated enough times becomes routine, no matter how many dice you throw at it.

That said, I'd like to see a form of randomized content, not unlike FFXI's Nyzule Isle, but more variant, show up in FFXIV. However, I'd also like to see a form of dungeon creator content for players to try to construct their own little monstrosities for fellow players to try out. Those, however, are both very large endeavors and not to be expected as anything more than a very-long-off-concept as a maybe - knowing how many assets that would require to program, design, balance, and then effectively host.

The Random Encounters idea, however, could likely be it's own little side path for progression, so long as we do not flatly replace the ideas we currently have with them. I'm all for adding more, rather than taking away something and replacing it with something else. This is why I don't mind the Echo buff for older content, actually, as it fits within this philosophy.