Yea, I’d mostly agree with @NOTaHFfan’s assessment.
Updates, fixes, or modifications are almost completely the original set but with tweaks and changes to either suit tastes or fix issues with the set. Many of my G2 Bionicle sets are modifications or updates (i.e. my Tahu Uniter has red upper arms and beefier thighs, but it’s still basically the original set):
Revamps are a sliding scale. I would say your Malum is pretty close to the original set, but not clearly bound by the original.
My Lesovikk revamp is a fairly large departure, but it doesn’t introduce many new ideas or alternate design choices, so I’d say something like this is near the middle or mid far end of the scale:
And then there’s revamps like @NOTaHFfan
’s Pridak example. Still very clearly Pridak, but it’s pushing the concept beyond its initial boundaries. He’s got merfolk limbs, the squid launcher as a staff, etc. But since it is still clearly Pridak, it’s still a revamp, just at the far end of the scale.
And reimaginings are beyond the far end of the revamp scale. I actually don’t even know who @NOTaHFfan’s example is a reimagining of, so that’s evidence enough that it’s a new take entirely.
Some of my other favorite examples are Patrick Bigg’s Kongu Inika:
Brick Brickolson’s Nidhiki:
’s Onua Nuva:
Of course, even then it’s hard to nail down the distinct line between a really broad revamp and a reimagining. Something like CZQ’s Onua Nuva is clearly a total reimagining, but what about something like VelociJACKtor’s Vamprah?
Still very clearly Vamprah, and it even shares a lot of the original set’s ideas and proportions, but is it a true “reimagining?” It’s difficult to say for sure.