And to keep the "official" client neutral .. a plugin system should be added such that you can "install" metaexchange or other bridges/gateways as addon ..
alternatively, metaexchange could host it's own wallet having a bridge from BTC built in! @monsterer
I spoke to Valentine yesterday about adding a "MarketPlace" page to the wallet where blocktrades, metaexchange, etc can be listed and he indicated that it shouldn't be difficult to add. Hopefully we will see something like this soon.
Also, if there are other suggestions for the name of such a page, please post your idea about it.