Would be interesting to remake the game or a sequel with either a more stylised 3D artsyle or some completely different graphics like fake 3D or 2D etc...
Because honestly the concept is good and i think there multiple craved niche that your game / concept could take on, but the game lack alot of appeal and polish. So honestly i feel that after gathering dev exp you should totaly try to basically remake it but better.
ANYWAY take care and thanks for your effort.