Agapanthus, replace or accept?

I have two rows of agapanthus leading up towards the front gate. They are green all year round, easy to care for, and I don’t mind them as a singular plant, but for some reason when I see them in a row they just remind me of display homes. I can’t help feeling the look could be improved by changing them to something else.

So the question is, should I replace them? And if so, any ideas? Or does it actually look fine as is and it’s my prejudice I need to work on.

Location: Southern Highlands, NSW (cool temperate).