Portfolio View, filtered for Current Week or Last Week.

I'd really like a filter that shows portfolio tracking for the Current Week and Last Week. I have both US and ASX portfolios. I tend to switch between Today and Today (from yesterdays open) quite a lot. I'd prefer to track performance for the Current and Last Week. Similar to the benefit in tracking This Month or Last Month. Most of my trading is based about different time frames (daily, weekly, monthly). Each having their own closing and opening range. As I base decisions on these time frames, it would be great to also track in this format. I'd never use the last 7 or 30 days, as these seem more of a sliding statistic of interest, but not a metric for performance comparison. The additional bonus with having a Current Week or Last Week, is being able set the time frame to track either portfolio (US, ASX) without concern for whether it's including yesterday or todays closing price.