None whatsoever, except the look of a block wall. If that doesn't work for you, you can always brick face the parts of the wall that can be seen like this (pictured before backfilling).
That looks great, and makes me think maybe I should stop trying to hide the retaining wall.
@Polygon started
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None whatsoever, except the look of a block wall. If that doesn't work for you, you can always brick face the parts of the wall that can be seen like this (pictured before backfilling).