UPDATE: I ended up adding this ppa[1], after reading this post[2]
So now, I can reuse "rofi -show drun..." with icons :) [1]: https://launchpad.net/~jasonpleau/+archive/ubuntu/rofi[2]: https://askubuntu.com/questions/1025875/how-to-install-rofi-1-5-on-ubuntu-16-04/1054067#1054067
