For me having the ability to share spendings using Revolut would be great.
Eg. I go on vacation with a friend (or three friends) and we want to split all costs. We both put in 200pound and all expenses will be deducted from this shared account/pot of money.
Eg 2. I go out for dinner with 4 friends, all using Revolut. We decide we would like to pay dinner together. I whip out my app, activate my shared spendings account on my Revolut and pay the dinner.
One startup known to offer these features: