Does anyone remember many years ago a website that posted a series of logs from some apparent atempt to use a mass driver style vehicle launcher to put a space 'pod' through a 'recently discovered' wormhole? It was a great series, I kept up with it for a few months before it got too cheesy, but it was billed as being completly dead serious and many people that were 'fans' were convinced it was real, up until the very end. This remind me of that, and it's not the first time I've seen the website.
I however, no matter how much I think about it, can't think of so much as a single situation where such a construct would actually provide ANY advantage, over conventional equipment, especially for the cost. You could put 4000 devices on a swiss army knife and still not have the one you need. Why pay 100 times the price of the specific tool for a general purpose one when the specific one is perfect?
Ever seen the loader from Aliens? A real world forklift could outperform it in every aspect (aside from perhaps climbing stairs) In the end it's up to the operator's skill. I can put the tips of the forks of our lift at work anywhere I want them within a few milimeters if I approach it correctly, and if you watch the Discover channel they have a series which showed a major port's dock crane operator and they were slinging 10+ tonne crates around at unbelievable speeds with accuracy on the order of a half inch from 100 feet in the air.