Given that Concorde seat pitches were only slightly better than WT+, the front row of the cabin did have more space.

Row 1 was kept for VIP pax who BA staff could whisk on the flight at the last minute and whish off at the start. So if you wanted to celebrity spot, you have to ask to be in the front cabin. You tend get a good view of the VIP in row 1 when you go to the small toilet in front of row 1.

Front cabin is also quieter. When the captain announced that the plane was going over to supersonic speed and not to be concerned about the a brust of noise from the engine ( I am sure I recalled he mentioned the word "burners"), I do recall I did not hear anything, Maybe it was just me.

One good bit about flying Concorde I recall was that you went from the lounge straight to the plane as the gate was directly accessible from the Concorde lounge or even part of it. One bad bit was the limited stuff you could bring one board. All coats and hats had to be taken off you as you boarded the plane and hung a rail prior to boarding at the gate. We did not have any so were unaware how these got returned when you got off the plane.