Since they have ported games from Model 2 and Lindbergh and other arcade machines of theirs for inclusion in the Yakuza games they should just release some arcade collections adding more of them bundled up already.
Do a Virtua Fighter bundle with all the titles up to 5FS, do a Model 2 racing bundle with stuff like Daytona USA, Sega Rally and Motor Raid, then Model 3 racing bundle for the likes of Daytona USA 2 and Scud Race and so on.
Collaborate with Sinden lightgun for lightgun bundles, maybe by theme like all the House of the Deads, then all of the Virtua Cop, Confidential Mission and Ghost Squad type stuff, the crazy ones with dinos and sharks, etc..!