Hello, neutronlaser!
It seems that people already started discussion about ROS on Raspberry Pi: [REQUEST]Raspberry Pi.
In case of the Dude a support from its side will be also required. Currently Dude support only the following platforms:
System requirements for server package
Hardware:
Tile - CCR series hardware
ARM - RB3011, RB1100AHx4 Dude Edition (RB1100Dx4)
mmips - hEX (RB750Gr3)
RouterOS x86 installations
RouterOS CHR environment
Thank you!