VGA is not outdated if you work in an office with a projector that requires VGA, although admittedly that's rare now.
Not that rare - and if you're going to give a presentation in a hotel conference room or suchlike you'd better pack that VGA adapter. I've also been in situations where the projector
did have HDMI but you'd have needed a stepladder to plug it in...
Practical upshot is that anybody who uses their MBP to give presentations on the go will need
both the Apple display adapters (one is VGA + USB-A, the other HDMI + USB-A).
I don't think that anybody is suggesting that the MBP should sprout a VGA adapter, though, and swapping the existing TB2/DisplayPort sockets for TB3/USB-C was probably inevitable. Part of the problem is not any one specific requirement, but that
everything changed - power, USB and display - in one go, and the total number of ports went down.
What
would be nice is an Apple-sanctioned USB-C to Mini-DP adapter that would also let us re-use our old MiniDP-to-X adapters: I can only find one on Amazon (or what is obviously the same product under various brands) and it has iffy reviews.
Just get a USB-C to HDMI cable (the USB-IF recently approved a standard protocol for cables).
...all fine and dandy, but it was only announced in September, so does anybody know if its actually implemented in the MBPs (it would probably have to be baked into the Intel TB3 controller chips).
Or, with the old rMBP, JUST PLUG IN TO THE HDMI PORT that was there...
Any charger and cable conforming to the USB power delivery standard will work.
Except the 15" MBP needs 85W and the USB power delivery standard "default" is only 60W and a
lot of USB-C cables and chargers are limited to that (including the
Belkin cables on the Apple store).
Plus, there are
well-documented stories about 3rd-party USB-C cables frying computers - so the moral of the story is probably to stick to well-respected brands, who tend to charge nearly as much as Apple (if they're not the ones on the Apple store anyway).
Oh, and some of us already have multiple MagSafe chargers, including ones built into perfectly good Cinema/Thunderbolt displays that Apple were selling until earlier last year.
In 18 months USB-C will be ubiquitous.
...probably, but USB-A will
still be ubiquitous, since there's plenty of
new PCs (and Macs!), printers, disc drives, memory sticks etc. being sold which only have USB-A, and low-rent conference rooms will still have projectors with VGA or (if you're really lucky) HDMI inputs.
Its quite simple - the MBP should have had 2xUSB-C/TB3, 2xUSB3.0, 1xHDMI and Magsafe (if you
wanted to power it over USB-C, from a dock for example, you could). Nobody asked for it to be thinner - that's what the MacBook/MBA are for.
(Apple are bonkers to let the MBA stagnate too - its probably
the classic laptop design for people who
do want ultimate portability).
Now, in 18 months, maybe the time will be right for new laptops to drop USB-A... but not today.