No, unfortunately this one won't support trackball AFAIK due to space constraints: https://mastodon.social/@mntmn/113081056191730605

There were trackballs on phones at one time.. of course, the ball has to be smaller, but it's very much doable.

I'd actually expect a larger trackball to be harder to do well, it has to be sunken in to allow closing the lid, and that sounds unpleasant to use.

Game controllers have really nice joysticks. I wish one (or two) of them were available next to regular keys, maybe instead of the trackpad.

Further, I'd like a split layout option for the keyboard, for the relaxed position oh the wrists, and better use of thumbs.

I was just thinking today about whether I'd enjoy a thumb joystick on this device, given that trackpads and I agree less and less these days (I have been on various trackballs for years on desktops to fend off RSI-like symptoms... recently tried giving the Magic Trackpad 2 another go because gestures and pixel-perfect scrolling rock, aaaaaand welcome back wrist pain! Back to my Ploopy Adept I went)

That, or trying to figure out a mini-trackball to fit where Next's trackpad is, maybe something sized like Pocket Reform. I don't love thumb trackballs (I'm a fingerball kinda guy), but I could make do.