Here is an alternative theory, if we are speculating. They are doing a reasonable, careful murder investigation in a high profile case. Everyone in the process knows that every warrant application and bit of evidence will be scrutinized on CNN. They know interviewing Hernandez is a waste of time, because he has lawyered up. He won't say a word. They will be careful. Every decision will be made not by detectives on the line but their bosses. A senior member of the AG's office already is assigned. Many prosecutors like to be on tv, but not if it's because they screwed up.
In a highly pressurized environment they convinced a judge there was probable cause to believe there was murder evidence in the house. That is a bad fact. They have evidence, and now they will do what police do. They will test dna. They will try to recover things from computers or camera memory sticks or whatever else they have. They will read documents. They will see if it leads to other sources of evidence and execute other warrants as necessary. And they will do it very methodically. Not like on tv dramas. Plodding some might say, because they will be required to prove chain of custody and authenticate everything along the way.
And if they get enough to have probable cause to believe Hernandez or anyone else commited a crime, they will arrest him or go to a grand jury and indict him (or whatever MA calls indictments). They may get a warrant or they may not. They may let him voluntarily report or they may not. (If it is a murder charge, likely not.). They will likely not publicly identify him as a target on a serious charge until they arrest him, because he has money and is a flight risk. It could take 1 day or 1 year to complete the process.
If we are speculating, this is my guess what is happening. The notion that they are getting judges in a high profile murder case to issue speculative high-flying warrants to try to sweat a lawyered-up man of means is also a theory. Where I sit it doesn't pass the smell test.
