They have had a year to consider their approach to investor perks in round 2 and this is what they’ve gone with - nothing 
To be fair, they did ask the community for ideas and our responses were not exactly ground breaking - https://community.monzo.com/t/ideas-for-perks-for-investing-in-our-crowdfunding/7190/44
When the round is complete I think we should demand to Free Hat! 