The New Markers Entity (Commands/Datapacks)

First off, I'm glad that this is a new addition, I can see a lot of potential being explored with this command, it'll take the load off of a lot of functions when dealing with entities and world positions, very exciting!

I personally just have one little request, if it's not already in the works - if it's lightweight enough, it'd be lovely if there was an option to keep the entity loaded in the world. Currently the way around this is to of course forceload the region around the entity in question, but that leads to a surprising amount of additional little issues that crop up, besides keeping multiple chunks loaded, depending on the project.

What does everyone else think? This might just be a niche feature I'm requesting, not sure how useful it'd be to other datapackers in the long run.