He's absolutely right that these games are a good fit for the DS: between Hotel Dusk, Phoenix Wright and stuff like Suda 51's The Silver Case, the DS is pretty much the only system that can be said to be experiencing a graphical-text-adventure boom. It also happens to be the current sales leader. If there were ever a time to shovel all your old adventure games onto a console, this is it.
Snatcher and Policenauts are high-quality games that would both sell to and satisfy the Phoenix Wright crowd. Throw a "FROM HIDEO KOJIMA, PRODUCER OF METAL GEAR" sticker on the box and you've got a game that is guaranteed to sell. Here's our totally unsolicited advice for Konami: port Snatcher first, and then if that sells, put some of the profits into translating Policenauts.
Other notable games on the list include Metroids (yay) and Pac-Man Vs. We can get behind that, since with Wi-Fi play, we'd actually get to try Pac-Man Vs. against another person for once. Unfortunately, we kind of think that Nintendo is loath to embarrass themselves further by referring back to the GBA/GC connectivity experiment. But more adventure games? That's an easy call.