Sorry... this is going to be a cathartic rant, and I know there's no answer but here goes.
After trying again to get a nice, consistent way to put full-page images with captions (no, way embedded text on the image.. spit), I dabbled with the wonder of SVGs.
Lovely, works a treat in ePub, looks great on the new Kindle Previewer #3 works. Great, all happy. Read a little more because I was having trouble getting non full-height SVGs to work and say the line in the Kindle guidelines that enhanced formatting and iOS apps don't support SVGs.
{deep breath} Okay then... so WHY? WHY can't the iOS app support something that 's been in the rest of the Kindle range for YEARS?
There's GOT to be a good reason for this... but I just can't see one.
Are they TRYING to mess with us? SVGs would be a GODSEND and can help make lovely looking content, but not supporting on one platform cripples the rest.
... or am I wrong? Someone PLEASE tell me that I'm wrong or today has just been a caffiene induced hallucinaton?
(Oh, and no gradients either????? Really????)