It's something we've discussed on various occasions, usually after in-person meetings. So far it has not been the highest priority additional feature, since one can always FFI to JS in the mean time, so that gives us some breathing room to see how usage patterns develop before committing to a potentially large new API surface. A step along that path is just the ability to refer to JS and other objects directly through opaque typed references, and that is more likely to happen sooner rather than later.