It would be nice to add comments while creating a task (unless i am missing something) it seems i have to create the task then comment. i'd rather do it in 1 step.
That is correct. We will consider changing this in the future.
+1 for this. I use this feature more as a 'note' field than as a comment thread, and agree it would feel much cleaner to have a task note field that is more integrated into the actual note. (This includes wanting the note to be immediately editable.) The current convention assumes a conversation/thread context where adding a new comment is the default and editing an existing one requires an extra click. Maybe adding task notes is even a new feature and comments remain as is?