MediaWiki architecture document/How and why/questions


 * If you had to pick, what are 5 key decisions MediaWiki's developers made that were very insightful?




 * And if you had to pick, what are 5 key decisions MediaWiki's developers made that were, in retrospect, the wrong choice?




 * What would you say were the main milestones in MediaWiki's history?




 * Did MediaWiki get more customizable over time, or less? Why?


 * What decisions and improvements improved or hurt MediaWiki's performance?




 * How would you describe our attitude to backwards compatibility?


 * Anything else you think should be included in a document about MediaWiki's architecture and history?