For example, the unedited (or deleted) posts page for a user with a large number of posts is quite tiring to use, even for the browser itself.
That's true. I only use that page to open a bunch of links in new tabs, other than that, it doesn't really have a function.Quote
I assume you're doing everything as a hobby, but what's the point of a tool if it complicates its use.
It got out of hand 
I never expected to store this much data when I started all this.Are you open to have someone else looking at the code and see how it can be improved, both from design and architecture perspective?