That would be another oddball decision on their part 
Yes & no.
On one hand, it’s maybe the more recent ‘obscure’ CV release, they’d no doubt generate digital sales as a pure digititle. Yet, for hardcore fans who already own the DS classics, it would be an incentive to repurchase these as one collection and acquire something which is hard to get. (In retrospect, it would’ve made more sense to release CV collection[minus GB titles], CV Requiem[plus DX], CV Collection GB + Adventure Rebirth, CV Collection Advance, CV collection DS & finally CV Collection 3D [ideally CV 64, LoD, LoI & CoD] to finish off.)
Heck, in difficult times, I’ve considered selling my Wii, since I have Adventure Rebirth, just like I’ve considered selling my PS3 which has MVC origins and MVC2, which are in a similar boat where they can’t be acquired(even digitally) anymore.