Chat (both video and text) also suffers from not having a easily usable whiteboard. And if you want to talk to someone about some code, hopping around between different bits, that needs screen sharing including remote access, so either person can hop around, highlight code, etc. It's all just fiddly.
We've had the same realization, so here's a shameless plug about how we are solving it. It will improve but it's already a big leap from what was previously available.
We don't use it as much as we ought to, but the times we have remembered that this feature exists, it's worked pretty well with Lync/Skype for Business. The screen sharing is actually pretty good, in my experience, and the whiteboarding is about as good as you can get, trying to draw stuff freeform with a mouse.
