Expense 2.0 Trip, Budget to be in each item and summed up

Expense 2.0 Trip, Budget to be in each item and summed up

Hi there. I have been testing the Trip function and the link to advance is good. However, the 'Budget' field in Trip forces the user to sum the budget amount manually and this is not favorable. It is better if, let's say, flight has its own budget field, hotel has its own, so on and so forth, you get it. Then the system will sum it up and show the value in the total Budget field. This budget field I believe is the one that will be translated to Advance Request. Please consider this seriously.