for me, the most valuable part of planning poker is when we see one vote that's way out of line with the rest, and that person explains their thinking, and some important discussion can take place. with asynchronous voting, i would imagine you'd get a fair bit of "oh, yeah, to be honest i don't remember why i gave that one an XL".

to be honest, i don't even see the point of keeping votes anonymous. if there's enough judgement in the room that people are ashamed to honestly say how difficult a task would be for them, i think that's a larger problem.

Judgement is potentially a problem.

But, beyond that, seeing votes could lead more timid team members to simply wait for the tech lead (or a boisterous team member) to vote and follow along.

With async 5 of those people can work on something else when 2 or 3 have questions or ideas about the story.

@MiquelLHC Welcome to the Atlassian marketplace =) Good to have new vendors there to compete with)