So you mean you want us to tell them what mob should get a card? Don't you think they know what mobs still need a card?
Or am I still getting you wrong? xDD
Of course they know about it. It's just a matter of time and resources.
For instance there were cards that existed for some time in game with both mobs being present (like Edward) and absent (like Decamon) as well as the cards that were (unless I am mistaken) just a concept (like the Neobulla card - it was only possible to see in on admins on the test server)...
Still, they had previously said they wanted to enhance all 'empty' mobs with their cards, so let's just wait for it
And, btw, why cards always have to be just + some dull stats? Why not having really fun cards like smb's skill - a couple of secs of mages force field or DK ice would be a decent variant