The Toto link has a new route: A7000R that has dual 1.7Ghz cpu and 1G memory and it cost only about 500 RMB and about $73 . I think that is a powerfull hardware and cheaper. Can openwrt support this hardware ?
The SOC, probably; the wlan (both cards), not anytime soon.
I got the hardware , it base on MT7621AT（2c/4t @880Mhz） + 2 Mt7615N （AC 2.4G + 5G） + Winbond W631GG6kb-12 （1GB RAM） + Winbond W25Q128JVSIQ (128M Nor flash) there are Fraudulent advertising not 1.7GHz (880 + 880 = 1760MHz ？？？？？)
Note: W631GG6KB is a "1G bits" DDR3 SDRAM (1Gb = 128MiB).
I could not find the description "CPU clock is 1.7 GHz" on totolink official website.
http://www.totolink.net/home/menu/newstpl/menu_newstpl/products/id/171.html