This first image is from a 'large hand' (5 tiles) playtest. With so many Pents in the hand, it was easy to make optimal plays at every turn. Only late in the game did it start to become challenging as the tile selection waned, but even so, it was a fairly flat experience, in my opinion.
Another rule adaption made, the Ouroborus are still wild, but can only be played out of the hand, not built upon or stolen.
Things are coming along nicely, going to have at least one solid ruleset written up soon (in my time, that means within a year...)