Since there's no new Mini, anyone thought of using a new MBP w/ 7th Gen i5 as a Desktop/Laptop. Any drawbacks to this? This would support a 4k display @60hz. It's costly if you're not going to also use it as a laptop but it's definitely more up to date than the 2014 mini.
I never owned a macbook and my mac mini doesn't see enough work to call it a main computer of mine, for now.
BUT, I do use laptop computers as desktop replacements for about 16 years now, with a couple of breaks here and there.
I am going to say a few things about the whole idea and take it as you wish.
Using a laptop as a desktop replacement can work just fine for a long time now. There are advantages. For me the largest was the small space required not just when you move/travel but also on the desk/home. I am sick of large PC style cases (no matter what the OS). Too much space, and no matter what, always look either down right ugly or crass.
I am not going to talk about advantages of real desktop computers as if you are looking for an Apple desktop...well, most of them go out of the window. (talking about the specific advantages, not that the machines are not good)
After all these years of using mainly laptops for main computers....here is the thing, IMO, they are not worth it. I reached this conclusion of the last couple of years. Not only they are far more expensive for each performance point, they can also be far more noisy than desktop systems, at least when they are on full load. There isn't much room inside of them to adequate cool without having the fan(s) go loud loud louder and stay there for longer than if you used a desktop machine. It's not their fault, there is just not enough space to have a powerful machine and also a quiet one.
If you value your peace and hate noise and going to use the machine for lots of heavy duty stuff, consider a desktop, be it a mini or an imac.
If you do need it to travel/carry it with out often and/or your tasks are not that demanding and money is not a problem then yes I would suggest getting a macbook pro.
If I had the money right now I would definitely buy an iMac.