I can't install your Beta given my current GWX 2.1/SH3 preference, but if it's worth anything, the top screen shot falls short of believable because of closeness of camera - hence distance will help provide a suitable illusion to the effect.
The other images improve the weak damage model that SH3 currently employs.
What could be added? - well without making your job tougher than what it already is, some interior visuals showing through the damage could help improve the overall quality - BUT I think those inner visuals need to be minimal, bare metal etc.
Image 3 is where traces of interior metal should/would be appropriate - this is all based on size of the "hole" of course, so a larger explosions i.e., a torpedo over a 8 cm shell would be more apt to show this type of damage..
I'll follow this closely, but your certainly on the proper track.
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