IMO the most sensible thing to do would be to stagnate but not kill mysql while at the same time using code from mysql to build a mysql compatible interface to oracle and a tool for migrating data from mysql to oracle.
And why do all the Firehose-based pages turn <i> into <blockquote>, anyway? It makes metamod damn confusing, and now I have to deal with it on my user page too!
They are already doing this. It's called Common Building Blocks. Seems to me like it's mostly used by the smaller players in the market however...