This comment makes me very happy, as I'm not a very good cook xD
Wery happy with how the system turns out to be, not beeing trivial but having ease of use and understanging !
Indeed beeing placed in the first row has no impact, I tested doing an horizontal 2*3 grid but the pattern for the ennemies and the movement were not that interesting, so I decided to expand to a 3*3. With this the pattern were more diverse and there's more freedom for movement, and there's pattern where the front row is the safe place an you want to go there. And as I said in a comment bellow I thought about weapons with different ranges such as a bow that you can only shot with at the bottom row, and a close combat weapon that do more damage near the weak spot, and this can be balanced with the ennemy patterns doing more damage in front of him, or having more pattern targetting this row
As you said, there's a lot of thing that can be done to expand this game ! I'll see if I find the time and the motivation to do so ^^ Thanks again for the feedback !