I think this looks really interesting. Congrats.
I love the idea of drops having to be placed beside the king, and that
means also you could do 3 drops on one turn, right?
I also like the 'archer' and 'spearman' idea of winning game if
reaching other end, combined with rule if they are captured they are out of
the game. The short range pieces are great for the game too.
When you release, make a game page here please.