I've finally got the chance to look at them in more detail and I am all the more impressed. I love how detailed and accurate they are The difference between NEO and CEO is cleverly solved. Love the subtle difference of A330 seats and A340 seats, with the A340 J seats being more similar to the 777 C seats (as they actually are IRL).

Some very minor details I noticed:
- Sometimes the last row is indicated, sometimes it isn't. I think it would be beneficial to also have them on the A330 and A3340.
- The seat letters are missing on the A321neo
- The Business and Economy Indicator on the A221 and A223 are off by one row
For the A340:
- Row 6, Letter K is missing on the J seat
- Maybe indicate Row 15 J seats as now they look like they are part of row 14. I see LoungeLizard has already mentioned this.

I can't stress how amazing those seatmaps are! The quality is amazing.