parsha bit: Matot-Mas'ei
parsha bit: Pinchas
parsha bit: Balak
(The rabbis seem comfortable with moving notable people around through time and space. I don't know if they're positing reincarnation or physical movement.)
parsha bit: Chukat
(My secondary source doesn't say why a red thread is identified with sinfulness. The only red thread that immediately comes to mind from Tanach is the one in Joshua that the two spies tell the woman in Jericho to use to signal her house so she'll be spared in the invasion -- which suggests righteousness, not sin, in that case.)
(This is a place-holder for a commentary on reading meaning into mitzvot versus "because God said so".)
parsha bit: Korach
parsha bit: B'ha'alot'cha
In the second year after the Exodus the people begin their journey from Har Sinai, and soon they begin to complain about the lack of meat and fish like they had back in Mitzrayim. Rabbi Samson Raphael Hirsch says that they do not complain out of nostalgia; rather, they are bored. All their needs are met with no effort on their part: manna and water are delivered daily, and they have the mishkan and divine protection. They feel, Hirsch says, as if they have no challenges. (Commentary on Num 11:1-11)
On a personal note, I have trouble understanding boredom. Yes, I've been in situations where I was bored and couldn't escape, but for the most part, I fill my days -- if not with activity, then at least with thinking. It can be a challenge sometimes to get my brain to shut up sometimes. I certainly remember the dull "are we there yet?" moments of my childhood, but I'm not sure Rabbi Hirsch isn't doing the Israelites a disservice with this interpretation. But on the other hand, they do act like whiny brats sometimes. :-)
parsha bit: Naso
Relevant to chumrot (extra stringencies not commanded by halacha), perhaps?
parsha bit: B'midbar
parsha bit: Behar - Bechukotai
parsha bit: Emor
parsha bit: Acharei Mot - Kedoshim
parsha bit: Tazria-Metzora
parsha bit: Sh'mini
parsha bit: Tzav
parsha bit: Vayikra
(Actually, even before the temple was destroyed there were synagogues where people prayed instead of journeying to Yerushalayim.)