be aware I’m speaking like if we were having a nice chat drinking by the end of the day on the seaside 
so what do I need ? well not much, rather let’s say what i’m dreaming about ?
perhaps it is already the case, and if it is then wow
If not, let’s say I want to import huge landscape, that need to be processed by the plugin chunk by chunk, and translated into unreal via world partition… in a manner that automagically, stuff are imported, and tailored down to meet standard RAM capacity, like culling and LODs so, the processing won’t try to load everything at once, but automate the process of importing, decimating lods or converting to nanite, saving in the project then unloading the area when complete before working on another, the size of which would be proportionate to available memory…
My toy/dream example target experiment project, to be concrete, would be to render my island, at full scale, with max res (1m) heightmap, of course it’s impossible to load a 72000x72000 heightmap as a whole, neither with nice OSM content on top of it, but, would something approaching this could be processed ? (and it’s quite ok if processing takes a week)
well, you asked for it
beyond that, your plugin could explore some addition to flirt with water plugin, ocean project or fluid flux to name a few, in the same automagical scale processing
yeah ideas are easy I know 