1) R' Bachyei says something extraordinary on last week's parsha. He writes that the keruvim are there to remind us of the existence of angels, "because just as we are commanded to believe in G-d, which is the primary ikar of the ikkarim... so too we are commanded to believe in angels and this is the second ikar." (25:18)
Since when does belief in angels rank up there with the ikkarei emunah?
But that's what he says, so take it up with R' Bachyei.
2) Why does the Torah include the command to put the lechem ha'panim on the shulchan (25:30) in the instructions of how to build a shulchan? The Torah does not stick the command to light the menorah in the middle of the instructions of how to build a menorah, or stick the command to offer korbanos in the description of what the mizbeiyach looked like. Why is the shulchan different?
My son did a post quoting sources to prove that putting lechem ha'panim on the shulchan is not just an independent mitzvah, but it part of how the mitzvah of building a shulchan. A shulchan without lechem is not a shulchan.
(In a similar vein, the Da'as Zekeinim asks why in the list of items donated to the Mishkan recorded at the beginning of the parsha -- zahav, kesef, nechoshes, etc. -- the Torah singles out only three of those items and tells us what they were used for: shemen la'ma'or, besamim l'shem ha'mishcha u'l'ketores ha'samim. He answers that when you construct a new house you want it to smell nice, you want it to be light and bright, you want everything to have a new house look. The menorah, ketores, shem ha'mishcha are not being mentioned here in their role as as independent mitzvos, but rather they are being mentioned in their role as part of the mitzvah of binyan ha'mishkan.)
I saw R' Nevenzahl has a different suggestion. The lechem ha'panim was usually placed (and the old lechem removed) on Shabbos. The chanukas ha'mishkan took place on a Sunday. Therefore, one might have thought that the shulchan should remain empty all week until the next Shabbos, kah mashma lan our pasuk that from day #1, from its inauguration, the shulchan should have lechem on it.