The way Jeeves was built, it actually makes much sense to upgrade. Just like you needed all those bots from old content, you would need jeeves (which already needs vanilla/tbc bots) and some cataclysm materials to create some upgraded version. Would be cool.
Also Pojodan, please suggest these on the official forum wtb Inscription portal (even if they don't implement it that way, something like jeaves would be cool for all profession.
If you think only jeeves makes engineering good and special we can't help you.