I would like to see a 760 Ti at $300.
Something along the lines of GK104 with 1344 Cuda cores, 7 SMX units, 112 Texture units, 32 ROPs, 850MHz base clock speed, 900MHz boost clock speed, 2048Mb of 1752MHz (7.0Gbps total) GDDR5 on a 256-bit bus (224.3 Gb/sec), around 210W with a six pin connector and a 8 pin connector, maximum double SLI.
Warning I pulled all of this info out of my head, deciding what would be a good trade off for nvidia to have a middle card that is separated from the 760 and the 770. This is only my wishes and not an actual product.