If it was to be that we get an Act 6,

Where should it take place ?
What would be the lore behind it ?
How would Blizz twist the end and Tyrael shattering the Worldstone to us going to an Act 6 ?
What would happen there ?
Who would be the final boss ?

Seen a tiktok, no act 6 but an act 3.5, explore the inner workings of the assassins guild.

That’s a much better idea than act 6 tbh

cain has a daughter leia she then becomes diablo

So would it be after Act 5's end or between A3 and Act 4 ?

Since the Warlock is already part of D2R, it would actually make sense if some new monsters used Warlock-style abilities too, since Diablo has always shared certain skills between enemies and playable classes.
Also i want to see some kind of ''Density Gems,Shards,Jewels (whatever) where we can somehow in the cube with a shard combine them and increase the density of a TZ.

More Akt 4 wps

this

We could even call them "Orb of Transmutation", "Orb of Augmentation", "Vaal Orb"...

Agreed on the first idea tho

Tyrael will of course fuck it up as he does in every Diablo, then the next act will be “Tyrael fucked up and freed all”