Hello
I just submitted a 1 fan version on my Valve index mod. It can feel like a rollback but it's actually a better version I believe :
1 fan is enough to pull out the warm air, it's not that big
It's a lot easier to make the USB plug, much more space for it
Added a switch to control the fan
Filled and the tiny holes that were making it less efficient
Here it is with a few pictures in case someone is interested : https://www.thingiverse.com/thing:4735054
(and I also updated the 2 fans version with the holes filled too : https://www.thingiverse.com/thing:4565466)