I see countless variations of these hilts that mostly seem based off the planar Javanese design. Many have skulls or snakes, sometimes in combination, or other animal forms worked into the design. Frankly i have an affinity for skulls and would like to eventually pick one of these up just for fun. I don't really take it seriously as a new keris hilt form and i'm pretty sure that the use of skulls and snakes is meant more to attract purchase from western collectors than any young members of keris society. I too would like to see some finesse added to the carvings, but thy seem to sell for $25-30 and you can't expect much for that. If it wasn't for the fact that the shipping costs more than the item on these i may have ordered one already just to add to my skull collection.
BTW, all of these seem to be coming from one seller in Jawa.
I also like to believe that keris art is still alive and therefore growing and developing. Here is an example of a new keris hilt which i love and think has a bit of the finesse these others are lacking.
