Starting in Pokemon Black and White, a big improvement is added that you could register up to 25 functions and items (instead of just one key item in previous generations), which is ready for you to use when you press Y Button, which is known in the game as the Ready button.
Location: It's where the sun rises, but it's smaller than Japan.
Well, it was a good upgrade to the feature. I was so relieved that I'm able to access many things, such as the Bike, in just two presses. I could even access my bag without closing the Dowsing Machine. It's better than the previous generations, where I can only register one key item, and the key item I mostly register is the Bike, especially Gen. III since there are many bike obstacles in the Hoenn region.
Other than that, there's nothing much I could say about it, despite wishing to retain that improved feature in X and Y.
This was a neat upgrade that made accessing registered key items even faster, I always hated having to look through the bag and I like to assign several items to the register, like the Bicycle and Super Rod. This was a huge improvement over previous games, which only allowed one item to get registered.
I'm hoping this feature is retained in X and Y as well as any later games.
This was extremely useful, since we could not only register key items, but also things like our TM case or Trainer Card. I never really used the bike in past games because of the key item limit (and because I was too lazy to go through my bag and find it), so it was really nice to have it selectable from a much smaller list that was readily available.
I try to keep my list as small as possible, and I don't think I've ever exceeded five. Off the top of my head I've got the Bicycle, Dowsing Machine, Xtransceiver, my Free Space in my bag and my party Pokemon on my ready list.
I really liked it! But I wanted to re-order everything at some point and then I kind of didn't (or couldn't??) Nevertheless I had the bike and uhhh the dowsing machine! There was something else too but I can't remember... maybe the rod? Useful fo' sure though!