Am I the only person who likes the concept of "Sidebar" and using an iPad (often w/ an Apple Pencil) as a second display on a Mac?

Let me do that w/ a MacBook Neo and iPad Air pair which look as if they belong together and which fit nicely into a bag and afford me the option of taking only the iPad Air and Apple Pencil when I want to travel light, and maybe I'll come back to the fold (the last thing I bought from Apple was Mac OS X Public Beta, before that it was OpenSTEP 4.2, and the last thing Apple made which I truly liked wholeheartedly was Snow Leopard).

Oh yeah, make the Apple Pencil work on an iPhone....

Instead, these days, I have a Samsung Galaxy Note 10+, Book 3 Pro 360 (two of them, panic-bought a spare when I though the line was being discontinued, it's now up to a Book 5), Kindle Scribe Colorsoft (replacing a first-gen unit) and a Wacom One display connected to a MacBook (purchased by an employer) and more Wacom styluses than I can easily count....

The high watermark of my graphical computing experience was using an NCR-3125 running Go Corp.'s PenPoint w/ FutureWave SmartSketch when mobile, and a NeXT Cube w/ a Wacom ArtZ --- I've tried pretty much every thing in-between since, but when things were finally getting better, Microsoft did Fall Creator's Update and everything came crashing down....

I'd really like for Apple to make a device trifecta which I would actually be willing to buy.