I noticed that the information in "Cited By" is exactly the same as what you get when you add a collection to the Passage Guide. Also, Explore has a lot of the same content as Passage Guide with one exception- When you hover over the commentaries in Explore you get a little preview of the information within (useful) but when you do the same for the commentary section in Passge Guide you just get the info for the commentary itself (not so uselful).
My suggestion: Add the Explore elements to the Passage guide and then make the collection tabs have the same options for tweaking as the cited by tool. Also fix the commentary section so you get a preview of the information you are looking for. Logos is looking to streamline and simplify things (although as a power user I am missing a lot of features I used to love in L3) and combining these three elements into one all inclusive passage guide would certainly simplify things (no more wondering which guide to use).