In main list, add option to show profit/loss value & Percentage ONLY from last but and not overall. Saves time to go in each coin and check Delta % in last transaction if we have had many buy/sells for single coins.
Eg. If I have 3 transactions,
  1. Buy 100 coins at 0.01 BTC
  2. Sell 100 coins at 0.02 BTC
  3. Buy 120 coins at .015 BTC
In main coins list, Only show profit /loss for only 3rd transaction instead of showing overall profit on main list. (We can have a switch for this in settings to show overall/last buy)
This will be important for daytraders as we tend to have many transactions for single coins and we dont have to go into each coin to see the profit situation for our last buy.