Vpro! Vpro! Vpro! All threads dreaming of bigger screen everything and yet weight comes with the expansion. Someone wants an 18" too. Someone else wants a 20". Get that keypad on the keyboard. Put in that bigger battery to make it all work for many hours. Etc.
In other threads, iMac 27" revival. iMac 29". iMac 30". iMac 32"
In other threads, bigger iPad. Apple fold phone. Bigger phone.
All of these "bigger" wants can be realized by virtualizing those screens. Then we can have any size screen available to us anywhere we go/are.
I share OPs desire for a bigger MB. When I go from 40" UW desktop to 16" MB when on the road, it feels cramped and productivity plunges. Yes, we could pack multiple screens in the (then much heavier) laptop bag. Yes, another inch or two would be slightly more screen RE.
But I look at Vpro and I see a new kind of laptop with any size screen or screens... all fitting in a laptop bag... without the weight of trying to approximate the same with physical screens. Like opening a laptop to get to work, slip on the goggles to get to work. Like closing the laptop when done with with work, slip off the goggles when done with work.
My vision in support of this want would be a modernized "throwback"... an accessory to Vpro that is basically Apples cut at a Commodore 64 or Amiga 500 (whole computer under keyboard in one case). We practically have this now if we can think in terms of separating perhaps the MBair computer from the lid. Some people are acquiring MBs with broken screens/lids, detaching computer from damaged part and then using the keyboard + computer "half" as a dedicated computer hooked to regular monitors.
Imagine the same in the laptop bag with Vpro delivering ANY size monitor(s). If Apple is willing, it would also deliver any size iPad and any size iPhone too.
If not the Commodore 64-type "dongle", the demo for Vpro implied using Magic Keyboard + trackpad in this way... perhaps leaning on the M2-based computer being in Vpro. That could be even better in terms of portability (minimizing the size & weight of what is in the laptop bag)... through I suspect the Commodore 64-type device would extend battery life too and offer options for Mx-PRO, Mx-MAX power (Vpro simply being an airplay-like receiver in this scenario). The demo showed that a Mac screen could definitely be tossed to Vpro, so this ability is already core functionality.
There is no stretch of imagination here... no sci-fi leap required. All core functions were already in the Vpro demo. The only new creation would be the Commodore 64-type Mac but even that could simply be a slightly modified MBair keyboard half. Use it with Vpro when mobile and then easily dock it or plug it into a regular desktop monitor when home/office.
The big problem with the ongoing, growing want of "bigger screens" in everything is that that pretty much means more weight. Unless, the form factor is altered to have overhang or folding screens, when it comes to laptops, the bottom "half" has to be as big as the top "half." So as we wish for more laptop screen RE, we are also- perhaps not- wishing for more weight and a bigger overall package. It seems to me, the best way to scratch this increasingly-common itch is to virtualize the screen and then minimize the bottom "half."
An inch or 3 more in a laptop wouldn't add much screen RE at all. But Vpro would allow the keyboard "half" to shrink towards minimum keyboard size (and weight) while allowing us to work on ANY size screen or screens. Look at the thinness of MBair now. Check its weight WITH lid. Imagine both without lid... and that plus Vpro in a new laptop bag instead. That seems VERY appealing to me and is hopefully my next "laptop" with a 16" screen, 17", 18", 20", 24", 30", 40", ultra-wide, multiple screens, etc... all weighing the same and taking up the same amount of space in the bag.
Too many of "us" seem to have a perception that once Vpro is put on, it becomes permanently affixed to our skulls. However, I see it as a new kind of laptop form factor... bringing desktop-sized screens to a relatively small, portable package... to use when we would otherwise use a mobile computer and put away when done. If we can get over the cost, it seems the easiest path to the 17" MB, 18", 20", 27" iMac, foldable iPhone, etc.