Earlier quoted context omitted.
Just a note. If you get the TB 3 dock most of the other dongles are redundant unless you need the functionality on the go.
Yep that occurred to me too. It becomes a case of do you disconnect and bring the TB 3 dock with you, buy a second 'traveling' dock or get just what you need for travel and hope for the best.
I also get what Apple is trying to do. My current MBP has the sd-card reader. I use it because I have a d7100, but everyone else I know with a mbp has literally never used that reader. For them it's a complete waste of space/weight. It is easy to get caught up in what we (as in HNers) need, and miss the fact that many people probably never using anything beyond the power port.
It's a similar situation with the removal of the headphone jack. Apple has stats and those show that the majority of people either use the headphones that come with the phone or have bought BT ones. Apple got ripped hard, but the rumors are most of the flagships coming out next year will also not have a headphone jack.