So many limitations!

Like so many of you, I'm frustrated witht the storage sitaution. Fresco is taking up 15GB of storage on my iPad. I just downloaded all my files and saved them to an external drive. (and I do mean all of them - - so there aren't any copies locally of recent work. I only have brushes I've created and saved and he brush packs I've added to Fresco. I've seen  only one possible solution  posted in this forum: try turning off brushes and some of the brush packs to see if that effects storage.  I tried that. I deleted  or disabled several large brush packs. Two days later, I still have 15 GB in Fresco on my iPad. Yes, I could delete the entire thing and reinstall it. I've done that in the past, but when you do that, it doesn't save your favorited brushes. They are gone.  It incredibly frusting and time consuming to try to recreate all the favorites because it's not just the stock brush I need to replace, but the stock brushes iwth all of the adjustments I've made to it. There's not even a way to organize the stock brushes! So I spend way too muchtime scrolling through brushes to find what I need. And yes, I know, add them to favorites. I've been doing that and now my favorites files have joined. the ranks of all the other brushes: scrolling and scrolling trying to find what I'm looking for. So... I need a solution from you, Fresco. Where is that 15 GB and how do I delete it without deleting all my brushes? (and yes, I have also permanently deleted the files from my device and the cloud.) The app itself takes up only 1.04 GB on my iPad.  People have been asking for a solution to this issue since at least 2019 and there still isn't a solution. So frustrating.  Thanks, folks.