If we can make a tenjiku-set-view that can be used for chu shogi, it will have an important impact on the existing chu shogi model, but it's probably the right solution. At this stage, I don't know enough about tenjiku shogi to propose a sprites file in the right order (easier to manage promotions). But I've made a few attempts with icons that could be used as a complement of yours.
If we can make a tenjiku-set-view that can be used for chu shogi, it will have an important impact on the existing chu shogi model, but it's probably the right solution. At this stage, I don't know enough about tenjiku shogi to propose a sprites file in the right order (easier to manage promotions). But I've made a few attempts with icons that could be used as a complement of yours.
sample 1 : chu shogi in bad order
sample 2 : chu seireigi in the right order
I like the duck, what was it used for?