The little purple dot just above the piece of land where the witch hut is? If that's it, I've prolly been close enough to have loaded that chunk. I spent quite a bit of time there building my witch farm and lighting up the area to improve the farm's efficiency. I'll check tomorrow.
Don't forget to slab slime chunks or flood the surface if your that keen on max spawns for witches
I found one in the fortress that is near my portal made maybe 100-150 blocks west of the spawn. Two blaze spawners are about 30 odd blocks apart and about 15 blocks vertically. I didn't notice the second one until I had finished my blaze farm. I was getting ok drops from the farm and it was causing me problems so I a fit of frustration I destroyed the second one. Not sure when I can get back gaming (away with work) but I will try and remember to grab more precise coords when I do.
Also a bit of a noob question but with the new update does this mean that map areas I haven't visited yet will generate differently to what was originally mapped by spurscar. Basically other than one mission west to get packed ice, melons and cocoa beans I have hung around near the spawn area
Terrain generation is only affected when they make changes to how things spawn.. So yes if it was generated prior to tu32 then u may find some generation cracks but that update mainly affected water generation than anything else so most of the cords and biome locations still apply