Firstly thank you for love-android-sdl2, it's exactly what I was looking for. (already took a look some month ago but your project didn't exist yet)
Secondly, in the small project I want to do, I'm needing multitouch support.
It can be easily implemented thanks to SDL2 and its SDL_FINGER* events which work perfeclty on Android.
I've attached a small patch I've just done which converts those event for LÖVE. Very trivial but it might help though.