To be honest I've not really kept up with any of them, Leonard looks like he'd be a very nice man but not what is needed in a leader, he was never electable and the Corbyn situation just didn't help. Ian Murray come back from Westminster?
Media seems to suggest that Bailie will sit in the role until after May and then look for a new leader so that would suggest they've given up for May, Leonard should have gone earlier.
It always reminds me of the quote about Geoffrey Howe saying it's like being savaged by a dead sheep.