Viable for emulation? Definitely, though I'd hazard a guess that the emulation will be on the slowish side. Atari/Midway Denver games sport a 250MHz MIPS CPU and hit full-speed on a reasonably high-end PC, but 340MHz might be pushing it a little. Still sounds like something that would be fun to look at.
I've got a very good scan of the bottom of the motherboard the top is going to be harder since i'll need to use a camera instead. https://i.imgur.com/qRdYgDe.jpeg there seems to be one small serial eeprom that i'll dump too on the bottom.
Yeah this serial eeprom could be changed at any point with a clip connected to a eprom programmer much easier then trying to change the NAND storage. The fact they store BD Player makes me wonder if the NAND firmware is also used for Samsung smart TV's with minor changes of course.