Yes, FAST is a good idea, but it's only being pushed (that I know of) by those outside the administration. Tinkering around the edges of the tax code might, at best, tinker around the edges of the economy, but it's very low bang for the buck (as a reminder, such tax codes would, you know, increase TEH DEFICIT (eek!) and do not do too much for jobs).
Perhaps we'd better just leave that accelerated depreciation for corporate jets in place. Oh, wait, we did? Good enough then.