The inefficiencies of Spec Kit (and how I'd optimise it)
TL;DR — Spec Kit is a great idea wearing too much armour. Its core job — helping you define features — is genuinely useful. But it tries to be a whole harness: it hogs context and drains tokens (so models compact and lose the very intent you wrote down), it's heavily opinionated (TDD and "best practices" enforced whether you need them or not), and it's simultaneously too heavy for small projects and too hard to track at scale. My answer is Spec Kit Lite: keep the spec, drop the harness.