Hi Michael -
Thanks for these questions. I'll answer them here:
Our intent is to keep the reconnection logic the same. That said we recently realized that we do not have an equivalent back off strategy for HTTPS drains. We are working on a feature to match this to the previous functionality.
The release does not currently allow for load balancing of a single drain. That certainly is an interesting idea and this architecture is better positioned to consider this feature. Is this a common use case for you?