If this were a job I was working on, I'd maybe be looking to do something long
these lines, basically taking a sculpture and abstracting it to create a unique mark. Sagmeister and co basically took the shape of the museum and used the different angles as a logomark. That shape can then be used with colour and fills to create a visual identity. The mark you currently have is a little too messy for me, it's not clear what it is, and it's not abstract enough (in the sense that it needs simplifying).
Personally, I really like this as a starting point, though I'd simplify it even more and use thicker lines. It's abstract, but has recognisable features. It literally puts a face to the name.
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