Well, I wouldn't call it flawed - I would rather call it brain-dead stupid I was aware the protocol is rather simple and originally targeted very simple media player devices - but haven't really though it can be that bad until I've read the Wikipedia article. As it stands at the moment (no support for seek of any kind, only one operation can be done at a time,...) the MTP protocol is a lost cause for any other use case than copy-a-few-files-and-pray-it-works unless it is totally overhauled to resemble something at least semi-functional.

Oops, fixed, thanks!