V-22 was also considered a few years ago, but it never made the "yeah, but seriously" list. It's too expensive to buy and with the numbers we could afford, too expensive to support.
Hercs are good until you need to put anything up-armoured in them, then its either too heavy or it wont fit and has to be broken down. We'll keep the
Js till they're knackered, and then replace them with A400M or whatever the yank equivalent is by then in the mid 2020s. And before you lot mutter "here we go again" with a European buy, the A400M is an awesome bit of gear and we won't be lead customer on it!
I hear there are also mutterings about sourcing an additional (well used) CH-47D or two to replace the machine lost in Afghanistan recently - not sure of it/they'll be upgraded to 5/5A standard.