I am just starting to get my feet wet with both Discourse and Loomio, and from what I have seen, what they are doing over there goes way, way beyond poll functionality and is incredibly handy for group decision making. Take a look at the help page (https://www.loomio.org/help) which goes into some detail. The decision making functionality is deeply embedded in the discussions for each topic. As you add your vote (with four options - up, down, abstain, block) you can add a note explaining your vote. As discussions happen and people change their minds (and their votes) that change is recorded as it moves along. Each topic can have multiple decisions associated with it, and can also supersede each other if the group decides to do something different etc.
Meanwhile on loomio I miss the great functionality and usability of discourse and as discussion topics go on it is possible to get lost in discussions that have lots of contributions which I think is a real problem. So in my head I am thinking I’d like a discourse forum for discussion and a loomio site for decisionmaking, but am not happy about the thought of realizing too late when it should be one or the other. So some sort of integration or jumping off point would be interesting if it could be architected. E.g. in addition to the “reply as new topic” link to fork a discussion you have a “reply with a loomio topic” or something like that.
I have not seen the roadmap for loomio yet but my suspicion is that with all the funding they just got they will just start adding more discourse-like features to make discussions easier to join and follow unless there is some proactive decision to collaborate.
Here’s a typical example of a simple loomio discussion and decision with just a few people participating: Loomio
And another typical example of the nightmare when you have a discussion (with no decisions!) with potentially hundreds of people. This should be on a discourse forum: Loomio