I have my N26 account, also my Revolut account and Monzo.
It is clear that BUNQ is the best fit for me. But I am missing the following:
1. Apple Pay, even N26 and Revolut have it implemented, and it is really a big thing
2. Having to pay for a Maestro Card in BUNQ is a big deal, because this is free for N26
3. Multicurrency like REVOLUT is a great options to keep your Dollars and Pounds, and can be handle by a Prepaid MasterCard
4. Aggregating data from different accounts can be a great point for BUNQ, using data API from different banks like is being done by BANKIN' and OUTBANK
I think all these features can be implemented by BUNQ and even improved.