With thanks to hrj (http://github.com/hrj/) for the original that it's based on, here's a quick feature chart that compares various WhatsApp alternatives:
@matrix oh I wish encryption would work reliably. Not yet. Also that "not ease of use" does really hurts. 😟
@matrix ease of use should be red in my opinion. Compared to the other messengers matrix is really pain in the ass
@matrix Missing the animated stickers line ;)
@matrix
Although I mostly agree with this list, I do find metadata a very important one to add! (one of the main reasons I use Signal)