First of all, It's the little ideas like these that give me joy to read, as I respect the effort of putting this together and thinking on a larger scale than yourself. Unfortunately my friend, I don't have the "feeling" that this will spark any addition in the direction you're aiming at.
Sure, the implementation doesn't sound complicated, yet I'd personally like to see the focus on content for the long run.
With this I mean: Focus on known issues which have a lot of support, keep on track with up-coming OSRS content and improving the QOL overall.
In these past years, I've rarely paid attention to the MoM on the forums, don't think that would change with a statue in game.
I'll remain neutral, as it won't bother me to see it added, but would feel like a waste of coding time in my opinion.
Cheers,
Pivo