Microsoft’s work management apps, Microsoft Planner and Microsoft Project, help your hybrid team coordinate and manage tasks and projects. Both share a similar look and feel by design to make it easy...
Updated Nov 11, 2024
Version 4.0
Blog Post
Mentions is the most frequently asked feature. I think, that the reason, why it was not done a long time ago already, is the group dependency. I think that only recently you can add external users to the Planner, which are not part of the Group. So that feature might be close too, unless the MS is lazy and ignorant here to add it finally. But - we are ok even without the mentions - comments go all the ppl assigned to the tasks. Works quite well for us.
As for me, I have never tried to compare Planner to the Lists, but rather to the Project. Project latelly added chat too, attachments, custom fields (though those can't be transferred to PBI IIRC), but Project lacks the mobile apps. Lists are indeed a good candidate to replace planner, as they allow kind of card / kanban view.
But we really can't work without a check-lists, which are e.g. silently ignored in your comparison table you have mentioned.