Yeah, I agree with Bosto; games which have, or are likely to get, a separate release on the console are unlikely to arrive on the Online Service. Capcom's Mega Man games never got released on the NES online service, for example, presumably because they too were available via a collection.
In fact, I'm not sure how many great 3rd party SNES games you can expect at this point. Even Chrono Trigger has releases on mobile etc, which they might not want to cannibalise. Maybe the Mortal Kombats, if they don't have a collection planned? Maybe Super Bomberman? Earthworm Jim?
Another problem is that so many of the SNES era's best 3rd party games were licenced; it's unlikely you'll get any of them at this stage.