Earlier quoted context omitted.
Two charging ports do not work on a phone, space is tight in there already. >Especially if the port is a brand new standard you'll never be able to borrow a charge cable for from a friend. The solution to that are adapters.
I'm honestly only worried about charging speed on laptops and tablets. Phones charge pretty quickly no matter what you plug them into, at least in my experience (I'm not a phone gamer so ymmv), whereas I've seen more than one laptop lose battery while charging if doing something demanding. If I carried an adapter I'd probably have my charger with me to be honest and I don't know anyone nice enough to carry adapters f…
What kind of tablet needs more than 240w ? I think that's what Alienware uses as well so I doubt you will ever need more than that. Not to mention that the trend going towards more efficient electronics/chips etc.