Yes, the plan is to have features that are relevant to both streamers and viewers. There's a balance that will need to be struck, obviously.
Low Latency is something that I would love to add, but we need a significant increase in capital before we can afford such an undertaking.
EDIT: I can't believe I missed the thing about custom emotes to be purchased with gems. It's funny you mention that, we had discussed something like this that I cannot share just yet. Stay tuned!