Usually, we remember good cards - Witch, Cultist, Rebuild, Mountebank, Jack of all Trades, Magpie - or we remember absolutely shitty cards - Scout, Counting House, Scout, Develop, Scout - or we remember interesting/weird cards - Band of Misfits, Rats, Wine Merchant, Advisor. But there are some cards that aren't quite shitty enough to be memorable, but aren't really good/interesting enough to be remembered either. Cards where you know what they do, but you don't really automatically think of them when trying to build a kingdom. Cards that you subconsciously skip over when looking over the board.
For me, a few cards like this are:
Royal Seal
Explorer
Merchant Ship
Harvest
Trade Route
What can we do to see these cards get their due? Do they deserve any attention in the first place? What cards do you forget about?