Checking LP Gains/Losses in Match History

Wouldn't it be a good idea to check LP Gains/Losses in Match History for ranked games? Just to see how much LP you lost/gain per game and you can also make some calculations off of that. For example, if I wanted to know how much LP I would probably gain if I won one more game, then I can know if I could reach promos or not. Just a quick thought. ^^