These things are always terrible in hindsight, but sure.
Leaving aside any 15-year olds who questionably earn the next set of selectors' backing I'll go
More conservative than the OP, but I'm honestly a bit perplexed as to why you've dumped 30-year olds Prior and Anderson out of the Test side with no explanation. If Prior goes, I'd plump for Foakes over Davies but tbh that's only because I've never heard of the latter. Broad is also definately part of the long-term plans. He'll come good.
Bell will hold a spot for at least a couple of years. He'll probably make a comeback if he scores a good few county runs too, which he has every time he's gone back. If not, Adam Wheater is my bolter for the average county cricketer who ups his game Trott-style. Bopara can't be killed off, he'll be a squaddie.
Rafique over Panesar or Kerrigan is part wishful thinking and part playing with the selectorial tropes we see in international sides. I think they'll be impressed by his T20I captaincy.
Maybe we wouldn't be so quick to fill buckets with filth if we knew they had a soul. Or maybe that's what they're into. Ain't no way to get inside a bucket's mind.