My 2 sats...
- The "most visible button" is wallet on the top right. I want to click it right away - but I'm already there. maybe no color here?
- drop the scrolling banner and replace it by a static warning banner, that I can close / hide. IMHO it pulls to much attention.
- drop "welcome stranger", maybe add "Balance:" instead
- most wallets center the balance (might look better)
- the logout needs to go somewhere else (top bar menu?)
- Make the copy buttons bigger for lightning addresses (all buttons need to work for fat fingers)
- Make all icons bigger, and also make sure they look the same size (the history icon looks bigger than the withdraw icon)
- Maybe add color to the buttons in the bottom. They look less important than the "Wallet" and the copy buttons. 

 Thank you so much, that is great feedback!

Instead of welcome stranger your username will be shown, but I might lower the brightness if that text a bit. 

 Better idd 

 And can we use npub.cash for receiving/sending zaps on #nostr? 

 Yes, you can use your npub.cash address on nostr. I do it too.