I find the new RT1024 more interesting, it is like the RT1020 (Cortex M7, 500Mhz) but with internal flash memory (4MB), and in LQFP144 format to be able to make designs with greater comfort.
One of these days I will try to make my first design with BGA, something that has a large pitch (0.8mm, 1mm), but still requires a 4 layer PCB which is quite expensive.
The only thing that caught my attention about the RT1070 is that it incorporates 2 and 4 lanes MIPI, interesting to be able to make designs with video screens, it remains to be seen if it supports hardware JPEG decoding. I already saw the datasheet and it seems that no, a pity, for now the only microcontroller I know with MIPI-DSI and hardware JPEG decoder is the STM32F769 / 779.