It's great to see game sharing being used, letting you send respectable chunks of some of the games to a friend's PSP. Presumably, your ulterior motive is to convince them to pick up the collection so you have a person to play ad hoc wireless with. Just like Capcom Classics Collection Remixed, though, the default controls are a bit loose for precise control.
The options for screen ratios are intact from Remixed, letting you play with the original screen shape, displace key data to a side, or let the game take up the whole PSP screen with uniformly well-done graphics. It stretches the games out a bit but is easily worth it to enjoy the full PSP screen. When this sets the game 90 degrees to its usual orientation (as it does with the vertical shooter 1942 ) it can be very awkward to actually press the buttons you need to get to. And Street Fighter is always going to be weird without a fighting pad. The issue was there in Remixed, so it's unfortunate that a solid control solution hasn't been implemented yet. We're thankful for the options, though, and there's still time to tweak it all before the game's release.
These are small complaints about a great line up of retro titles. Game sharing is a great feature to see being used, and it isn't too late to see an excellent alternate control scheme be introduced for the alternate screen ratios.