great experience
I had a great experience with transferwise previously due to it's live mid market rates. But recently my transaction was longer time than expected. It may be due to connected to the transferwise bank accounts. So it would be great to present account from the same bank as customer's (like if customer has account in Swedbank , then WISE can give account from same bank), so that it would cut the lead time for the money transfer. I think this will be a small change in their software, but hugely benefit their customers. 
Apart from the above suggestion, WISE is always the BEST :)