That's a fair question. And I'm sorry that I can't seem to make a short post. I am definitely a "painter" when I communicate, rather than a "pointer".
Right now, to me, the night of the murders looks like a very large puzzle with several small to medium groups of pieces put together and scattered around the table. Each group of pieces illustrates part of that night's events. I can generally see where in the puzzle those pieces belong, and they reveal enough to show us that 4 people died horribly, and how they honed in on BK as the suspect. The DNA on the sheath is probably worth at least one whole puzzle edge put together.
Now, there may be DNA elsewhere. We don't yet know. If so, it's likely that the sheath will be used not only to prove BK possessed the weapon, but that he was in the house AND at the victim's side during the crime - which will neuter a defense claim that BK's DNA found anywhere else was deposited in the house at some other time during a party. But, until then, we only have DNA on the sheath. Only a general idea of where in the puzzle it fits.
We have the latent footprint in the hallway. Without context, we only know it as a single footprint. Once it's put into context during the trial, we'll probably know it as one of numerous footprints leading from one of the pools of blood to that spot, getting fainter as the killer walked. Logically, I can't see LE mentioning one footprint that doesn't tie to anything else at the scene. So I'm waiting to see what other pieces will be revealed.
We have various pieces of video and the cell phone data, but it's been pointed out that none of that puts him in the house
as far as we know. But it's certainly possible that someone's security video captured a man either entering or leaving, or getting into the Elantra afterward. We don't yet know. If so, it would provide context and put more of those puzzle pieces into place.
So, it's not that I necessarily see holes. I see blank areas where the pieces that provide context have yet to be revealed to us. Do I think BK did it? At this point, I do. And I'm pretty confident that LE did not use their best evidence in the PCA, so I am expecting to hear some pretty damning new evidence at the Preliminary Hearing. I'm not prepared to assume anything is an actual hole in the case until I start becoming worried about how many puzzle pieces still haven't found their place in the puzzle.
Does that help?