The emphasis was to create as they call it, an arcade (turn-based) strategy game. To make it unintimidating to new players, fun, remove complexity, whilst retaining depth.
It uses a nicely balanced art style (between cute, and approachable, without dropping detail) features endearing animation and the music will be inspired by old samurai movies and dub. The game will support 4 players locally, but will also offer network multiplayer.
Another good thing that this game, is that they keep the interface really clean and uncluttered. For instance, the colour of the unit's banner denotes health, and the left/right side panel is reserved for each team's unit data, away from the area showing the action.
They describe it in better detail, and show some screenshots on the official site of the PC/XBLA release.