I am new to Monzo and the reason I have one began with my question, “What’s that red card you just pulled out?” My relative then sold it to me, so ‘word of mouth’ is your best, trusted salesperson. The red shouts out.
If Monzo were going to add elements of customisation, one for me would be to be able to vary the payment limit per transaction. If there was an attempt to exceed my limit, the transaction is declined and my Monzo card is frozen, until I unfreeze it in the normal way. I might wish to change the limit, depending where I am and what I am doing from day to day.