OK here's my submission lol:
I'll tell you though Bitcoin Cash will have a hard time with marketing; here's the conversation with the average crypto-curious lay-person with nil- to next to no- knowledge of cryptocurrencies.
U1: Ok so let's use Bitcoin Cash!
U2: Is that like Bitcoin?
U1: Yes it is like Bitcoin but faster than Bitcoin, and cheaper than Bitcoin, it's called Bitcoin Cash! You can buy one for $US 350, much less than 1/10 the price of a single Bitcoin.
U2: Ok but why don't we just use Bitcoin?
U1: Because Bitcoin has high fees, we need to use Bitcoin Cash!
U2: OK, but can't I just wait to (and etc. etc.)
I wouldn't know what to say! Except maybe hopefully one day Bitcoin Cash will just become the original Bitcoin.
Anyway here's my submission hope you like it! It's a pixellated ad :]