Agree with the comments above.
I have accounts with Citi and HSBC. I use Citi for most stuff - payroll, transfers, credit card autopay, etc.
Citi doesn't have many of its own ATMs or branches, but I can use any JetCo ATM (any of these banks:
https://www.jetco.com.hk/en/about-jetco/member-banks, which are fairly ubiquitous) and online banking for other stuff. Very seldom do I need to visit a branch (I can't actually remember the last time).
The HSBC ATM card doesn't work outside of Hong Kong, so you have to link it to a credit card for overseas withdrawals (and in my experience there is a good chance of being charged cash withdrawal fees depending on how the overseas ATM processes the transaction, which you then have to call to waive, etc). It's a faff. No such issues with Citi.