Apologies - I haven't had time to read through all of this thread, but I may have some useful stuff. Haze pointed me in this direction via his blog. I have almost all of the round corner Tiger LCD games (over 100 unique games). I would be happy for you guys to try to preserve them in MESS. Is this possible?
I don't think it is likely that the ROMs can be dumped non-destructively, but I could be wrong. These games generally have the chip bonded directly to the PCB and then globbed with epoxy. I've only looked at some RZone games and a few Konami games, so I'm not sure what chip the Tiger games use. Could you list a few titles? I can do some research.
I actually had 4 Tiger LCD games here that were part of a bulk buy: X-Men Project X, Space Jam, Sonic and Batman the Animated Series. They are all very similar inside. The globs have 50-60 traces coming from them, depending on the game. I'll try to de-glob one and see what it is. It's likely that different games have different chips.