Funny... the TradersPost paper trading account shows the "Day's P&L" at the top of the dashboard, but this field is missing when I view the dashboard for my live brokerage account (IBKR).

I really like your idea to show P&L per strategy/subscription, but this may be an impossible ask. A trader could send entry signals via one webhook and exit signals via another webhook. A trader could enter a trade via one webhook, and then manually cancel/replace the exit order so it's no longer associated with the strategy. A trader could accrue position size using multiple strategies, and then submit one exit order to close the position. So it's not really cut & dry which profits/losses would belong to which strategy.

The devs could perhaps show P&L on closed orders if the brokerage provides this information; however closed orders currently disappear overnight. Also, the broker's P&L calculation per trade is not always "correct" depending on your accounting method and how trades are matched into tax lots. I actually throw out my broker's 1099-B tax form, and I would ignore their P&L calculation if it were displayed on TradersPost.

I download trades from my brokerage directly to analyze P&L. Ideally, TradersPost would map additional data fields to the brokerage transactions (i.e. allow us to send an external identifier like the strategy name/id in the JSON message, and map this field to the standard "Order Reference" field on the brokerage transaction itself). This way when you download trades from your brokerage to calculate P&L, you can easily analyze by strategy (or whatever tag you sent to the "Order Reference" field).