I think you need to grab a brand-new airman and watch him try to self-navigate through it in order to get this right. Whenever you have to say something, you need to write it down, because that's where DTS failed to be intuitive.
Starters:
1. Something plainly labeled "scanned receipts and documents". all by itself...at the end. And it should accept JPG, TIF, PDF, DOC, XPS etc.
2. A clear, graphical representation of the steps for a voucher. Auth, vouch, money - and how it "reserves" and releases money. We still have about a third of our folks modifying their authorization instead of creating a voucher....because it's on the front page.
3. Mother of god - a logical flow - created by a real graphic web designer?
4. Can we call rental cars....rental cars, instead of commercial auto, TDY?
5. WTF happened to group authorizations? That was a huge time-saver.
6. I want to use my phone to take pictures of my reciepts and have an email/phone number to email/text them in....ala USAA check deposits.