Dungeons New Lost Sanctuary Idea

I have noticed that many players have gripes with the Lost Sanctuary Dungeon. Whether it be the repetition, the boss fight, or the presentation, most players agree it needs a change. Strangely, none of said players suggested a change, so I took it upon myself to do so. Remember, this is not an exact layout of how the dungeon will progress, but I think its a good outline to work with.

Stage 1:
The dialogue and area should remain unchanged, except for near the end of the room. There is a sheet of wood blocking the continouation of the dungeon. Kill the creeper that spawns to blow up the wood, revealing the main attraction of the dungeon: a giant, no, enourmous tree in the center of a massive cavern, the tree's branches holding the ceiling and keeping it from collapsing.
Stage 2:
This stage is essentially the leaft parkour from the end of the dungeon, moved here. The end of the parkour puts you right next to a hole in the tree.
Stage 3:
Kill creepers, collect TNT, deposit the TNT, blow up the ground. Simple, and drops you down a bit, revealing the next phase, which is...
Stage 4:
[1/1] Garoth: You have become an annoyance. Leave my realm now or be killed!
For this stage, I suggest something probably never thought of before: a dropper. For those curious, a dropper is a long tunnel stretching up many blocks in height, with various obstacles, usually with a theme. The goal is to fall to the very bottom an land in some water, which in this case will be about half the size of tthe dropper itself. Hopefully, command blocks can be utilized to prevent death, just a teleporting back to the top of the dropper.
Stage 5:
After landing in the water, you surface to discover a large room with many tunnels branching off it. These "tunnels" turn out to be the tree's roots, and they form a simple maze that leads you aboveground.
Stage 6:
[1/2] Garoth: What are you doing to my creation!?
[2/2] Garoth: You will pay for what you have done to my tree!
Basically, this stage is the big grind creepers for TNT stage. Kill enough "Explosive Creepers" to obtain 6 TNT, which is used to blow up the largest root of the tree. This triggers a cutscene of the tree breaking and falling over, caving in most of the cave roof. You are then telported to the "new" area, with a path leading up to the tree stump, and the entrance to the boss fight.
Stage 7: Boss Fight
[1/1] Garoth: You will PAY for what you have done to my haven!
You will be teleported into a boss room looking alike to the current one. As like now, Garoth will have an immense amount of HP, well over 20K. He will continually spawn miniboss creepers with ~750 HP, which drop Unstable TNT when killed. If enough TNT is collected and deposited into the "hoppers" on the sides of the arena, it will cause an explosion to damage the tree trunk. Each explosion will cause Garoth to take 8,000 damage, meaning about 3 explosions should suffice. The boss rewards will stay the same, as well as the xp reward, although the items could use a buff.
TL;DR: FIX THE DAMN DUNGEON