The Terminal 4 and 4S are new, and huge, but could...

The Terminal 4 and 4S are new, and huge, but could the people there spend some budgets on direction signs? Everything is so dispersed here, and you will get loss very easily. For examples:

- There is no direction sign in T4 leading to the VAT refund desk, not until you can see the desk itself.
- After you got the custom stamp on the VAT forms, there is no direction for cash refund. When you arrived T4S, the first VAT sign will point you to go up to another floor but only you can find there is another custom. You need to pass through yet another security check (take you 5-10 more min) to go back to the original starting point in T4S.
- The lounge is inside the duty-free store in RSU area. If you missed the sign in area S, there is no way you can find the lounge.