I'm curious about what the soon-to-be-scroogled's OneDrive accounts look like.
If you are a Document-heavy person, why don't you have Office 365? It gives you 1 TB of storage, which is quite a bit.
If you love Groove, why don't you have a Groove Music Pass? It's $30 for a year every Christmas, or $130 in their yearly bundles with Office and whatnot, and it gives you an extra 100 GB on OneDrive too.
I am a heavy OneDrive user. I have 2 PCs fully backed up there, use it on my Lumia 1520, Xbox 360 and my Xbox One as well. Currently I have 184,261 files in it, taking up 344 GB total. With absolutely 0 effort to avoid duplicate backups and whatnot, I'm not even halfway through the 1 TB from Office 365, let alone needing the extra storage from Groove yet.