Story-wise:
BL3 takes place after an undetermined amount of time, following the events depicted at the end of BL2/TPS.
We don’t know what the VHs were told as of yet, only that all the remaining ones are in. No “new” VHs (and by “new” I mean yes, Tina is “not” and thus, has to be in).
We join a group of them as they arrive on a new planet, after opening several Vaults on uninhabited worlds.
This one has a twin sister in the vicinity, and commercial exchanges occur daily between them.
One of them is a big deserted place, with few oasis of life here and there, like “The Dahl Headlands” (BL1) but on a bigger scale, with underground villages.
The other one would feature bigger cities, like “Old Haven” (BL1) but once again, on a bigger scale.
The Vault would be buried randomly in one of them, and the key to open it on the other one.
This would possibly change each new playthrough, with each planet featuring several possible locations.
At the start, the VHs would be able to choose where to land.
Then, due to some sort of malfunction caused by either the environment or some technical issues with the ship, all their equipment would be destroyed.
They would then be stuck on this planet for a while, with no means to contact either Sanctuary or some sort of mothership they would have.
That would also mean no “friendly shops” for quite some time: no Marcus, no Moxxi, no Scooter and no Zed.
The VHs would start with a base skillset inherited from one of the various famous builds of the previous games.
Those skills would then expand each level due to the gifts granted by the Vaults they found before.
They would also have their slots (not the backpack) filled with good equipment (at least blue) related to the chosen skillset.
Those in need of ammo would be helped with an artifact/relic that would regenerate their weapons during a good portion of the game.
After making some impressive discoveries, they’d be able to contact their friends and find a way to make them settle on either one of the planets, and expand.
This would unlock shops: weapons, ammo, skills/skins changes, proper vehicles…
The vending machines wouldn’t randomly feature legendaries. Keeping the VHs from being on the field is not a good idea.
If a grinder was to be added/kept, it would only be able to recycle known equipment and by no means would it be able to randomly generate every available weapon in the loot pool.
Opening the Vault would finally unlock the mysteries introduced by BL2/TPS endgames and this would lead to the big finale.
Technical side:
I’d like to see customizable (dedicated) servers, with:
- characters playable on solo and on unaltered servers
- characters only playable on customized servers
And:
- stronger security for saves so that we know when we play with someone who has likely tempered with them
- gameplay that keeps the best from BL1 & BL2, no need to re-invent the wheel, especially when it works