Is it just me, or does that seem like running a lot of tests per day. I mean, how many lines of code do they write per day? 1000? Do they run the test suite ever time they write two lines of code?
While speeding up the process is always good, tools like lucifer or spork are only masking the problem: loading the whole environment for unit-level tests. Sails, like Rails, promote tight coupling between all parts of the system, which harms test speed, thus harming another development tool: TDD.
The more decoupled and isolated you write your business logic, the easier and faster it is to test drive it. Then you simply plug an HTTP interface (with routes and whatnot) that calls into your core.
furthermore, your code is then only as good as your tests. And thus your code become vulnerable to failing on anything outside the test cases.