I think April should have gone.
Yes it was a selling task, and Dan was woeful, but April was autocratic, ignored the advice to check what had the best margins, and didn't shop around for deals in the fish market. Even if Dan had sold like a superhero, the team couldn't climb out of the hole April had put them in.
I'm only basing it on the task, i think she's a much better candidate than Dan, who if he'd been PM would probably still be in the market, looking lost.