The monitoring software already have temperature monitoring via GPU sensors.  I don't think it's a necessary additional expense for a tool that is supposed to be resetting rigs on demand or automatic when it's locked up.  Claymore also have settings to disable when at certain temperature or keep it cool up and below certain temp.  Current pricing for the reset tool is already at the sweet spot, additional cost will make it less appealing.

P.S I will be demoing Simplemining RIG Resetting tools with my Giant Panda farms as well as normal open air rigs Farm.  See link below

https://bitcointalk.org/index.php?topic=1761303.msg17588677#msg17588677