No coherent themes..? I have no such rumblings... Sorry but these 'people directly' involved don't convince me that they are actually in the know at all... the links between MOS, BvS and SS are just as coherent... maybe even mores... than most Marvel properties.
I don't agree that MOS was made without thought to a larger universe... this is Snyder we're talking about – I believe he wanted to do this all along, however the studio probably wanted to play safe... however there is the Wayne Tech satellite, Luthorcorp lorries, the open stasis pod in the Kryptonian ship Clark goes into etc. So Bruce Wayne exists in this universe... Lex Luthor exists... possibly another Kryptonian walking around somewhere... does a Superhero movie have to have an after credits scene where they virtually smack you round the face with a plot, to qualify as creating a shared universe?
How do you know they are coherent? On top of not having seen two of the three movies, two of them are not even finished.
As for the people you say are not in the know...I worked on them. So I feel pretty confident I would have a better grasp on how these are done then say, someone who didn't.
As for your building and corp names being a sign of a shared universe...if THAT is all it takes nearly every movie every made shares a common universe.
Do they need a post credits scene..no. But what happens when you don't have a detailed laid out plan you can get the stuff that often happens in comics, where one story contradicts another, and lots of contradicting info and things that make no sense.
Just for example....if superman was around on earth for 32 years, over lapping with older batman, why did he not do anything? Or let's say, with the way they are letting future films be "connected" but independent and the filmmaker of each flick has total control...let's say in Aquaman a major event contradicts what was shown in SS, or what not.
As for someone saying Zach has kinda the Fiege roll...not the case. dC/WB has a kind of "board" with executives and others on it. But no one is in charge. And they have made it clear that they do not want to have a set of rules. They want to allow each director/filmmaker to have full autonomy.
Superman vs. Batman? DC's Real Battle Is How to Create Its Superhero Universe - Hollywood Reporter
Here's some of the same points....
Also, up until 2012-13 the WB plan was to have Chris Nolan run the whole DCU, having him as essentially their Kevin Fiege...they where also planning to bring Bale back as batman. Problems arose, partly because they made this plan without actually having Nolan or bale on board. So that caused a total reboot of thier plans. But the people in charge, and those in charge of the money mostly, where tired of seeing marvel and disney destroy them at the box office. So they quickly changed man of steel 2 into batman vs superman and this whole new thing began. The problem is, it's like marvel going from iron man 1 straight into avengers. Without fleshed out world or characters, and no firm guidance it's a shot in the dark.
Personally I'm very happy with how BvS has looked so far. That doesn't mean people's concerns are unfounded.