If you really thought about it, if all developers had api tools enabled
during development time, we wouldn't need it enabled in build, would we? ;)
I just suggest the one interested to use API Tools because it's
helpful, I'm not forcing anyone.
Anyhow, we'll enable API Tools at build time, since it's easier to
control how build behaves than having everyone using some tools,
especially if they slow down the workspace.
But I remember a presentation that said that fixing an error that
appears in IDE while writing code takes a few seconds, whereas
fixing it after a build report takes minutes. Having this is IDE is
more efficient, but I understand all te drawbacks, and you're free
to set up your environment as you want.