Yes, a jury or judge may certainly give both direct and circumstantial evidence the same weight. It may also find circumstantial evidence more or less convincing than direct evidence.
Your list is -- as I said -- excellent, but each piece or even the pieces put together as a whole (a) do not physically tie Barry to Suzanne's disappearance or (b) provide a motive on Barry's part to harm Suzanne. The factors, taken together, perhaps paint Barry as odd but don't even rise to a finding of probable cause, much less beyond a reasonable doubt. I would concede that they may amount to reasonable suspicion, if taken as a whole, but that isn't enough for an arrest.
I get it: these are factors that raise your suspicion, not evidence to guilt for a trial. I merely want to point out that the evidence, as you've ably laid it out, is not sufficient for a conviction or even (at this stage) an arrest.
Maybe you and I are reading
@gitana1 's posts differently.
If there are any of those pieces of evidence tying BM to Suzanne's death or disappearance, they would be persuasive (and admissible).
No one is saying these exist, yet. But yeah, if there's blood spatter in the marital bedroom, and part of a bloody fingerprint somewhere on the premises (or even on Suzanne's bike), that's pretty strong stuff.
Gitana is just listing the kinds of evidence that courts admit and juries take seriously. Some of them are far more likely to be present in this case:
If BM is the suspect, here's the list with some notes).
Finger prints. (probably not as useful, one expects a husband's fingerprints to be all over)
Blood spatter. (not good if it's inside the house or garage or vehicles; doesn't even have to be splatter if in a vehicle - still good evidence)
DNA evidence. (could rule out suspects for sure and could be in unusual places)
Tire tracks. (I wonder if BM was up at Fire Camp?)
Foot prints. (I wonder if BM was up at Fire Camp? I wonder if footprints were found near the bike)
A cigarette butt matching what a certain suspect smokes.
Most witness testimony.
A literal smoking gun.
Possession of a murder weapon.
Phone records. (Will be very important in this case, this was a phone-connected family)
Text message (Also very important in this case, IMO).
Whoever the murderer is, if even half those items from Gitana's list are relevant, it'll go to an arrest warrant, IMO.
Right now, most of us aren't too concerned about the trial - we're still involved in the investigation.
In my own imagination, I keep a positive view. LE has found some incriminating evidence - GPS records from the truck for sure, GPS from the various phones. I suspect they've contacted phone companies to get pings from along the highway area.
OTOH, perhaps something was found on May 10...from one of those categories.