The Witcher Season 2: 10 Things We'd Love To See
7. The Silver Sword
Fantasy has a habit of giving great significance to weapons. Narsil, The Sword in the Stone, Luke's lightsabre, the trend of making a weapon a key player in the plot can be seen everywhere. The Witcher is no different, though instead of one particular blade it is the whole concept of silver swords.
Silver slays monsters, that's what the show tells us, and with the knuckle dusters and weighted chain used against the Striga, even the coins offered to the Doppler, we can see its a true statement. This focus on a particular material is something that does pop up in other series, Game of Thrones with its Dragonglass comes to mind, but silver as a choice has a much deeper connection to real world folklore.
Seeing more of the silver swords would add another dynamic to the fight scenes, showing the strength of silver against monsters compared to regular weapons, but also the weaknesses when used against others. A piece of sharp metal is a piece of sharp metal at the end of the day, but there's a good reason Geralt never uses his silver against anything with its own weapon or armour (hint: shatter shatter).
A balance of silver and steel would remind us of the real strengths of a Witcher: they know these monsters, and they know the best way to kill them. When regular steel won't do it, you need a Witcher's silver.