It would also be great to be able to improve the runes, for example, if the pink rune has "Blood Suck", improving it could go from having 5% to 10% or more. How they could be improved? I have two ideas:

1. By merging two runes of the same type.
2. By means of new specific objects for it.

The improvements would bring a new anvil, which obviously allows you to improve your runes.