It's difficult to say.
Personally, i would love some ports (really want Mario 3D World!), but for Switch's case, a console that is already lacking some really importante games, i don't think that it really benefits from having a lot of old ports.
Wii U had them at launch and people asked "why should i buy it".
For a console manufacturer, the ideal is that devs bring new games; gamers feel the same way. Developers are the ones that can be really happy about it because they will have a new market for them.
If things don't change, i'm afraid Switch will become a port machine in gamer's eyes as ports are frequent:
Resident Evil Rev. 1 & 2
Dragon Quest X
Dragon Quest Heroes 1 & 2
L A Noire
Batman: The Telltale Series
Dragon Ball Xenoverse 2
Fate/Extella: The Umbral Star
a few other japanese games more
a "few" more Indie games
That's, 15 games?
If the list had all the games that were ported, it would be even bigger...
And this for a console that has been on the market for 6 months (10, if we include the ports that were announced and yet to release). It really is a lot.