While first comparing piwikipedia and wikitools, I have been astonished to see how much light and simple are scripts to run a bot and "do basic things", ti: reading and writing pages, access to API, and so on.
I'll try - consider that I'm far from skilled or "professional" - to prune off from pywikipedia any script but the basic ones, covered by wikitools, just to have some personal fun; but I encourage developers to do something similar, writing a real "pywikipedia core" containing nothing but really needed modules to run basics with personal scripts.
I presume that the result will exclude 95% or more of present pwykipedia content.
Alex brollo