The next DLC should offer more epic battles on the scale of fighting King Kaarstad. This is one of the most difficult and memorable fights in the Dragonborn dlc. This should be the premise for battling the Daedra alongside the Aaedra now that the Dragonborn has fully ascended, past mere mortal strength. he will have to call on the many species to aide him in battling the most ruthless of the Daedra and restablish the Aedra to power in that plain. Weapons of legend exist on that plain as well like the ones used while warring among themselves. Some quest related, rewarded, but most attained by defeating a Daedra or Aaedra. They will also reward you with a new form associated with that daedra. It needs to let you recruit the various species to fight alongside of you, to include dragons (essential). The war with Aaedra should be Akin to the civil war but more developed. You fight with what you recruit. These are spread out battles like the civil war, but quest regulating the advancement to these wars and winning terrtories which can be seized again. This is until you finaally destroy Mo lag Bal or a unknown supreme daedra, with what assets you aquired throughout the game. This is no easy tasks, your quest completions and feats prompt the recruitment of allies, to fight any of these battles.
Special Effects and uniqueness is needed. If it is a weapon of lore there should be nothing else that looks like it or has its effects. I would like to see a Aaedric weapon that teleport strikes while swinging it. In translation like deadpool fighting in the Wolverine movie. Aedra Lore weapons has to be bad ass something we never seen before. Of course this affect is only while charged because it is hard for you to be hit. It has to be balanced. I would like dynamic lighting effects to make the swords or weapons unique. The Glare effect used on the in-game sun used on a sword, moving up and down the sword when you swing or move. This makes enemies flinch, blind, and stuns them.
Werewolf form needs a night eye ring or something. Fix the blind predator. I think it would be ridiculous for a werewolf to cast candlelight.
Fix hearthfire so all potential NPC can live there. This means expanding it to accomodate them (barracks).