Basically, since Morrowind, each game has put focus on one of the Daedric Princes, in some cases two or more, mainly through their involvement in the main quest and the Daedric expansion. Morrowind had Azura and then Hircine in Bloodmoon. Oblivion had Mehrunes Dagon and then Sheogorath in Shivering Isles. Aside from Hermaeus Mora appearing as part of the main quest, no real influence on the Daedric Princes part outside from their individual quests, aside from Nocturnal of course playing a part in the Thieves Guild questline, and then Hermaeus Mora playing a large part in Dragonborn.
My question is simple: Which Daedric Prince do you think should be given the spotlight next and why? Perhaps even how, if you have an idea as to how. Daedric expansions, expanded Daedric quests, involvement in major quest lines including the main quest. Could also be something different, like a Battlespire-inspired expansion.