Mineshaft idea

After watching Grians golf video i know you all read these ideas, so i thought i might aswell say it

i feel like mineshafts are kinda neglected, but thats because its a structure not many people think about. whilst this wont fix it, it is a idea for something to add onto mineshafts

at the end of mineshaft hallways, spesificly dead ends mabye there could be a chance where the tunnel is collapsed, having cobbled deepslate and deepslate ores in a pile at the end (same with stone ofc, if its above y0) 

also a ladder between 2 floors of the mineshaft to make it easier to navigate without the staircase, kinda like the trial chambers! and mabye you could change the loot tables of the minecart chests

what im thinking is you could add abit of cobble/cobbled deepslate, along with mabye normal ores, (like if they were mined with silktouch)

mabye you could change the wood type depending on temprature, such as cold biomes might have spruce whilst hotter biomes have dark oak or jungle

this could mabye open up atleast some blocks for superflat worlds, and make others easier to get