Display Thermo History option

An option to show the thermo cost of last few edits/operations would be very useful for people who are trying to understand what affects thermo, particularly the graphics thermo. Currently the number (e.g. +1%) appears, and is overwritten, then goes away as you edit. A little arrow to expand each thermo counter to show the costs of the last, let's say 5 edits, would really help people test and learn the systems themselves if they don't know that you need to look up Tutorials on YouTube to really understand the system.