Surprisingly, the dealbreaker for me on this current generation is 2x TB3 ports on one side. I really like being able to charge from either side.
On a tangential note, there were reports about the Intel based MacBook Pro from earlier this year having CPU usage spikes and heating issues when charging from the left side port. For users with this problem, it was effectively “charge using the right side port”.
It throttles badly and overheats no matter which side you charge on.
Actually surprised it didn't get more attention. If you're downloading and charging at the same time then your computer is unusable.