> Can you list tools having problems with inline sourcemaps?

Autoprefixer and grunt-autoprefixer—for now (may be [changed](https://github.com/ai/autoprefixer/issues/155)).

> Inlining SM is also part of the standard
> 'bundle' name has no special meaning here and not used at least by chrome

It is, but why do we need bundle.map at all if sourceMappingURL doesn't point to it? I think we should at least consider using only one of the possible ways (base64 or separate file), and I propose the most common way (save map to a separate file and point to it in sourceMappingURL).