I dont know how feasible this is but it would be extremely useful to get a memory/resource usage by plugin loaded in order to diagnose and fix plugins that may be written poorly or consuming excess memory. 

Not really feasible, but you're welcome to try via PR. You can find more about this in old posts.

Yeah I figured this would have to be done more via oxide itself than a plugin. Might be able to estimate it via a plugin if all the objects were completely exposed. :(