Ability to exclude particular assets from portfolio percentage

This might be a very niche problem but I like to exclude my BTC holdings from my general holdings. BTC To me is a savings account that I don’t consider part of my investment percentage allocations.

I would love if I could keep the current information and art up but in addition perhaps have an option to create “virtual/ private” portfolio where one could select a the assets and view all the metrics around just those assets.

At the moment am just doing the math on the side because Koinly is by fair the best / simplest portfolio tracker.