PFM + Slot attachment. Is it a perfect design for this case?

[Shenzhen sunflower dental]

Hello , everyone. I working in Shenzhen Sunflower Dental Lab. I like this case design so much when i seen this case in our lab. I think the dentist really so smart to made this design for this case. Do you think so,my friends . Or you may have better design for this case ?

Remark: 36 pontic, mesial of 37 lean a lot to lingual side .
The PFM crown we made is porcelain fused to palladium

 

[Shenzhen sunflower dental]

Other modeles for this case

 

[rkm rdt]

With all due respect,In my opinion, I think it would be a better design if the attachment were placed on the distal of the bicuspid.

The female on the bicuspid with the male on the molar pontic.