If you’ve just jailbroken your iPad I guess you’ve already installed OpenSSH from Cydia, which is that framework that allows you to root into your device using FTP clients like Cyberduck and Transmit.
If so, there’s a little trick you can perform that lets you scale iPhone apps for the iPad, without waiting for the developers to update their apps. In this way, and if you’re lucky, you can have an iPhone app running in fullscreen without pixel doubling, which supports all the various orientations and that even uses iPad’s UI elements.