All BioShock and the first three Borderlands games will be available separately on the eShop

[Pemalite]

Bioshock 1 was a masterpiece.
And personally... I consider Bioshock 2 as more of an expansion pack to that game, you need to pickup both.

I already own these games on multiple other platforms with better visuals and performance, so won't be picking these up on Switch... But if the Switch is your primary/only console, then it's certainly worth the purchase.