Changes from Ultsky

Things which are not currently in release build

Dungeon darkness is not compatible with lighting mod so has been removed.
You cannot build your own home with Atronoch’s crossing - it hasn’t been ported to SE, and this is beyond our abilities to port ourselves sadly
Skyrim souls has been removed - no more unpaused menus
Fishing is currently very broken (In terms of gold able to be earned from fished up junk)
Spell sword / Smart cast aren’t in SE.
Locked City Gates is broken on SE so has been removed.
Undeath is not in the build
Immersive armors is no longer included
There isn’t a way of carrying large sums of coin around - Imperial mail and Merchant notes aren’t in this build.
Paper world map has gone - replaced with Quality world map which is less….. Tetchy
Easy wheel is gone.
Immersive COW has been replaced with Obscures - which no longer has the “classes” feature.
Hejarchen Farm was removed due to being unable to balance patch the mod in time for release

You can’t set up camp in or near cities, towns and villages - you need to move approx 20 meters away from any city/town gates to be able to drop a tent.
Enemy’s following you out of caves and stuff is slightly broken in this build
Food will no longer spoil
Getting drunk / catching an illness no longer makes you motion sick.
Helgan is locked - no more free loot
You can now see how much gold and arrows weigh in your inventory
Iequip is back (yay!)
Bathing in Skyrim has been replaced with a much better pair of mods.
All the key binds have changed
Torches no longer extinguish themselves in poor weather
Extended cities and towns is being rewritten from scratch and therefore a lot of the towns which had shops which you may be used to, are now missing (E.G Ivarstead no longer has a blacksmith)
Everyone now has a real name (can be confusing if you see someone armed, as you won’t know if they are hostile or not until they are trying to fill you full of holes)
Water/skooma kegs are no longer in the game and have been replaced with mead kegs.
Tree’s can no longer be felled, only harvested for a small amount of wood
City guards now follow you if you act shady.
Bandoliers and pouches have been removed, to compensate a large backpack is in place.
Winterhold now has a carriage

Flutes can no longer be spammed to give masses of gold and blacksmithing XP, now require Milk and a cooking pot to craft and grant no XP - Sorry folks this exploit has been fixed.
Crafting now has a toolkit mechanic, which are required to craft recipes (and act as filters for the large amount of items that are in game to craft)
You can now craft chests and place those.
There’s a new crafting keybind to break down items into components.