Here are my humble proposals for you... oh, already overworked developer!

1. Copy/paste nodes between conversations:
To the best of my knowledge, there's no way of selecting a specific node/s and get it/them duplicated to another conversation. Only whole conversations could be duplicated to a new one.
I've used the latter with success to save some time, but there are numerous times when I only want to copy one specific node, like when I need to add an unexpected node doing something identical in multiple conversations.
I'd totally kill for this.

And to a less critical extent...
2. Enhance the 'Search' bar with a replace feature:
This would also be nice, as sequence commands tend to be very repetitive with only minor changes between conversations.
For instance, I use sequence commands in every node to trigger talking animation FSMs. The only difference in them is the name of the character object that needs to receive the event.
Tbh, without a copy/paste nodes feature this wouldn't be extremely time-saving. But combined would make a very neat tag team.

So, just my two cents. Thank you for your time and work.