When I read "Slack is so last year", my first thought was "Oh, so Ryver is just this year's Slack." That's not a win, because I already have Slack and I don't need this year's trendy new version. That ad might have a high click-through rate, but you need something better than click-through to sell an enterprise client.

Pitching new features would be more appealing, but you have to actually have new features that are good. Task management is nice, but there are lots of Slack-integrable options already going.

As is, I'm really not sure what this pitch is supposed to say: "our well-established competitor is well-established"? Sounds good to me.