Also, from a economics & collecting standpoint, I like when older cards are still relevant for gameplay. It gives value (beyond sentimental) to older sets, which makes collecting and trading more fun, as well as is better for the overall economy of Redemption cards.
One such example is how King Zedekiah in the Kings set boosted a Prophets set card, Dungeon of Malchiah. Another is Rahab (CoW) boosting Scarlet Line (Wo).
I definitely like reprints too - it's not one or the other - and I'm super excited to learn about what's coming up this year in Redemption!!