Development wise I don't think there's much chance of that given the disparity in staff and production values. And the DS games aren't even real remakes, they're converisions of previous remakes. Even from purely a localization perspective it's likely not the case when you factor IV or V's larger scripts versus Heroes' voice work.I'd argue Heroes' budget is actually lower indeed but that's just my speculation..
It's a 3DS issue because SE seems continually unwilling to invest in the platform outside Japan. Not just with DQ but also with the Bravely games. And this even after they pointed to the surprise success of Default in the west as a sign they needed to alter business practices and bring over more games like that.How is it a 3DS issue? If that was the case, why not bring over the 3DS DQM games? It's easy to say they're bringing Heroes and Builders over, but I think Builders is a momentum move to try and spark more interest in the DQ series, rather than it being evocative of the West's interest in the series. After all, it still took 4 years for Dragon Quest VIII to be brought over, and it required Nintendo to come in. The series pales in comparison to the West compared to how it's received in the East (Dragon Quest is to Japan what Final Fantasy is to the West).
They don't seem to mind taking chances on even riskier localizations on PS3, Steam, PS4, iOS or Android. And yet for whatever reason 3DS remains the odd man out. Well, along with Vita too I guess.