I like your new idea. Both 'OnlineTextMZ' and 'DurabilityMZ' are very useful and hard to see anywhere else.
I think making a new plugin as you want is helpful for the community as well as me. If the plugin needs new features or improvements, I or someone else in the community will ask for it, and I don't think it's a problem to start it then.
Anyway, thank you for having this concern and asking us that.