Pelase dont give 25k xp for doing fight caves, that's too easy, level 40s can do fight caves , besides people like it already, the game would be flooded with fire capes and jad pets, it would need to get buffed or give less xp.
Bosses look alright. I like the hellhound boss a lot as they are my favorite monster to kill.
-Straw hat Pirates Crew
sounds fun, though I'd prefer a slay requirement added to cerberus/replace dboots with bandos boots, just to give bandos boots a use since it's higher level content/harder to get
If the upgraded Dragon Pickaxe and Hatchet don't also have upgraded stats to cut logs/mine ores faster, then that upgrade isn't worth it. Degradable items need more incentive.
Perhaps make it so that the new boots are created as follows...
Give the following items to a new NPC
Ranger boots + Snakeskin boots + frog skin boots + spined boots + the new crystal (bring up price of these otherwise worthless items)
Dragon boots + Rune boots + adamant boots + mithril boots + black boots + steel boots + iron boots + bronze boots + the new crystal (keep the price of slayer dropped boots up as most are worthless)
Infinity boots + wizard boots + dark or light mystic boots + ghostly boots (keep the price of these drops up and adds in a quest requirement)
or something along those lines, as majority of those items are junk as of now and will fill the lower level slayer monster spots once more
Pegasian Boots
Created by infusing ranger boots with one of the as yet unnamed crystals, Pegasian boots provide a +12 range attack, -12 magic attack and +5 stab, slash, crush & magic defence.
Pegasian boots require 75 defence and ranged to wear.
So basically, your adding an item sink for a quite rare and expensive item... yay.