the issue is cartidge space and cost, neogeo cartidge were pretty big(100MB+) And those portable are just not feasible, maybe far in future when Digital distribution become a think, so sorry that will not be possible
yea but not all of them, I did a quick ROM check just be sure and metal slug 1 is 26 megabytes uncompressed and the later games get progressively bigger with metal slug 3 at 83 megabytes in fact most of the bigger games top out at the 85 megabytes count, but question can't cartridges have the games be compressed folder or is that pc operating thing? Because if they can they usually top out on 40 megabytes, you now just saying.
even if the system cant benefit from immediately from huge sized games cant it at least benefit on smaller ones mortal kombat 2 is a 16 megabyte rom game and in otl look at what people manage to create for the N64 in games the size of 20 megabytes here in otl