Catspjs quote "others are just plain market intereference IMO (ie changes to buy it now price setting)."

Interesting you say this.  I've just tried a little experiment (for my own interest) and listed two items (almost a pair).  I deliberately and specifically UNTICKED  the Auto Relist.  

And guess what!!!.  They have been automatically relisted.  

eBay don't have the right to determine whether I relist or not.  That is my decision.  

The same applies to the BIN settings - if you don't see it before you relist, eBay has ticked the Best Offer box - then you (the owner of the listings) have to spend time editing to get rid of them.

eBay the Usurper - shouldn't stick fingers in where they don't belong.  

And I fully concur with your last sentence.