I have to agree with you so far Walpole, other than the materials and overall slenderness, through actual tower itself is currently very bland. The facade is very flat and generic so far, the window formation and overall facade appears to be a lighter toned version of the brown mid-rise in your last photo.
Where's the subtle detailing and indentations adding depth and interest? The central section doesn't appear to protrude from the rest of the the build acting as a large pillaster, as renders initially implied.
The shorter structure fronting Central Park looks fantastic, however the tower not so much. Let us hope that things will improve with further progress and that the eventual crown will turn things around.