I have a 13" retina. I use the USB ports, HDMI port, and headphone jack regularly.
I never use the thunderbolt ports. I'll probably end up using the SD card slot before the thunderbolt ports.
What do you use them for?
I have several Thunderbolt peripherals at home ..... LaCie Rugged SSD with a 250GB 840 Evo in it.
I could have just put the 250GB 840 Evo in a USB 3 enclosure, but TRIM wouldn't work over USB (it works over TB). Besides, I carry it with me all the time.
1) Are you sure about TRIM working on external TB enclosures? Does this work with any external TB enclosure?
2) The LaCie Rugged comes with a drive in it. Did you buy it and swap the drives? Isn't that a very expensive? LaCie should offer case only so you can use your own drive.
I have a 15 rMBP + Thunderbolt display at work.