Surely there's a way to make the 19-pin connector compatible with micro-USB though - for instance, put the extra pins further back in it, so that you can still plug a microUSB cable into it. After all, USB 3.0 is backwards compatible with USB 2.0, even though USB 3 has more pins.
USB 3.0 is only backwards compatible on the Type A connector. The mini/micro connectors are very different. Once more, here is more proof that the "standards" change far too often, while Apple has done everything they can to KEEP a standard. If anything, you really need to look at this and ask yourself, which one REALLY qualifies to be called a "standard"? The one that everyone else uses, and swaps out as needed, or the connector that does everything, and remains unchanged for a decade - easily supporting the newest standards without breaking compatibility?