I like DSLs, and god-help me I like MXML. Mainly for the auto-complete features we get from Builder. I've recently built a new application framework at Pathways (my 9-5), which uses an MXML file as the core of the application to map events, services, actions(think commands), etc. This has got me thinking I'd like to have a tool that'll let me define an MXML DSL and have it spit out a bunch of AS3 classes to implement it. I'd like to hear from anybody who's got any thoughts on the idea, or things they'd like to see included. I probably won't get started on it just yet, but it's floating around in my head with the rest of the crazy ideas waiting to escape into code.