LeoFinance had polls in Threads, but I believe that is not currently available. Are you coordinating with them on this feature? We need such things to work across dapps.
I hope the various teams are talking. I know there has been some communication via the Town Hall calls.
We looked at the various efforts so far at creating polling systems on Hive. And then we decided to work on an open protocol which nobody owns and has nobody's brand, and could be easily implemented by all frontends.
Another aspect of this is that for more substantial governance voting, a full post would allow for presenting with more elaboration the matter being voted on. The post is also integrated with the communities functionalities. It allows for more structured commenting underneath the post. And so on.
I remember InLeo reps talking about implementing stake weighted polling a while ago. Not sure where they are on that though!
Not super likely, I'd guess. There are a lot of little silos in Hive... natural human behaviour. I'd be happy to be proven very wrong though. And I am aware of several collab efforts, I just doubt it's the norm.
Given how small Hive is we can't afford too much incompatibility. It's going to save work to use what others have already designed. We shall see.