Thanks for the insights @pupeno ,
I know that a grid system isn't always the best solution, but this was part of a larger project, and I thought I could as well release it as it was already done. I personally end up rewriting the same code for every project, so this here is a simpler solution for me.
As for the device sizes, I'm not quite sure what you mean. The waffle grid was written in sass, so you can easily customize a couple of variables to tweak the breakpoints. I am currently working on a solution that lets you chose as many breakpoints as you want for further customization, but I haven't come across a way that's simple enough yet.
Lucas
Lucas Gruwez