Yeah, a lot of potential here. Attachments would be nice. Appearance is another thing. Other than the boring plains I think the lack of color is unattractive. Yeah, I get it, it's like an old film, but maybe you could add more and more color as we complete levels. It's really, really easy. I used artillery once...and missed every shot. Used only a Springfield and only bought German MGs. Also, a big letdown that you can't assault the fort itself. And you only had TWO types of enemies. That's ridiculous. Hopefully you make a sequel with all these ideas and more.
I'd like to see more things to buy, like colors or brushes. And being able to join rooms where only one person draws at a time and the rest guesses. More words and something to fight trolls, like moderators or admins. Servers also need some work. Game has potential.