I’d like to see it too 
The problem source is how Glide handles data, it’s not a classic Client–server model.
Glide needs to use/read its internal databases (base on Firebase) and no matter what external “database” we try to use (GS, Excel, MySQL, etc), any updated or new row (or value) must be replicated to Glide database in order to be loaded and used on our APPs.
Our data can be saved on our MySQL server but the data on our devices come from Glide databases ruled by Firebase and it’s a bottleneck unfortunately, the synchronization between both sources consumes time and resources.
On small/mid-size APPs, load all data can be a good idea but on large ones the performance and manipulation problems appear as we know. Use Pagination to load data dynamically will be the missing piece that Glide needs to implement.
Meanwhile, use a workaround like bellow to get data frequently without loading it might be an option;
Saludos