i have a idea to add just ancient vampire or ESO ver of Dawnguard DLC what includes ancient vampire who transforms & like in skyrim he can stay transformed as long as he wants, he has different skills & is stronger a bit in stage 4 then normal vamp, when he is in vamp form ofc he has different skills then before like ww, but even hes normal skills are different from normal vamp, it would be cool to have vamp who can transform to
additional idea
Dawngaurd has 3 options side with vamps side with hunters or make peace between them so they will hunt only the bad vamps not all & u have the option no matter who's team u joined (i mean even if u already became Ancient Vamp), but as A Vamp its bit harder to get to peace. (maybe as a vamp u half to kill both the hunters & vamp's leaders cause the second in command trusts u, there is mission that ends with u getting hes trust, u even tell him u have a plan to end it & it involves u becoming Vamp lord), but the peace choice includes killing the vamp lord cause he wants to rule humans, he sees this as only way for peace that he cant trust humans & hes daughter sees things differently so she will be ur ally, so some parts are ferry similar to Skyrims dawnguard when it comes to daughter betraying her father for the good of her ppl, or maybe the daughter replaces the vamp lord if u becoming boss would be weird in ur opinion
some passives will be same as normal vamp, example faster sneaking, when it comes to sneaking he will have same passive for it
but ancient vampires will be part of it either way Dawnguard or just new Vampire type ancient vampire
it will also add little change in all NPC, they notice ur a vamp or ww & when it comes to vamps they act slightly nervous well some of them, but trust even less, it adds extra work to Persuade some1 so Persuade option isn't enough (u get some extra mission to win trust, it would be nice to add rep sys to, this would replace the trust mission, that rep effects Persuade success & fail, so if ur vamp & have good rep, well it can be bad rep to but if rep says u are trust worthy despite being murderer then Persuade will work, it just says trust worthy or its not shown at all, just written in game scrip), depends what u want to Persuade, if u just give advice then Persuade works, when it comes to convincing NPC to do a moral choice then not, when it comes to ww in pact they are respected, seen as warriors & hunters, with vamps, Intimidate always works, its not effected by being vamp
this are my ideas for that DLC
but some above are just ideas, it will be left to dev's if they decide to do it
new u can vote
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Edit
by Yes to all my previous mentioned options i mean all i mentioned in the vote questions