I'm surprised by your comments A&C.
For example why would any lawyer (ambulance chasing or not) that could expose a cover up by authority be seen as negative?? That is a good thing isn't it and completely regardless of any association to aviation matters.
Your paragraphs 2 & 3 - so what other facts can the AAIB gather 3 months on? They have whats left of the aircraft, they have a live pilot that crashed it and access to all the 3rd parties that were involved in the events and given its 2015 there is much film, including on board. What more "facts" can emerge?
Now no doubt the analysis piece could take some time but 3 months is already quite significant and if there are elements of particular detailed work that require special analysis why not say?
These accident investigations simply take far far too long to conclude and its got nothing to do with the media or things being half baked. The GermanWings A320 crash in the Alps. The outline of what happened took a matter of days to be highlighted. Was that half baked?
I'm sure there will be a many hundred page final document that goes into much more detailed analysis but the outline summary is always going to be CFIT.
Glasgow helicopter, fuel mismanagement and failed auto-rotation. London helicopter grubbing around in bad wx, Norfolk heli grubbing around in bad wx. Now granted the final report puts meat on those bare bones but the bare bones are still there.
Same with Shoreham. You should want to know because as in every accident either the machine failed or the man failed and if the machine failed then what part of the process fell over were we thought something was safe and it suddenly isn't safe. That is an obvious desire. If the man failed - for get ambulance chasing or getting legal - you should want to know because you as an aviator want to be able to continue flying with your same freedoms because the airmanship you hold is held by others.
OR as is very often the case things were flagged in the past and then nothing got done, only for it to come back and bite us later and that requires serious attention because maybe then we have the wrong people doing this type of work.
Go and read some elements of the G-LBAL report. Fast forward to page 56 of that report and then see how some people are living, worse allowed to live. Then if you really need things spelling out in the AAIB's own words:-
Opportunities to reduce the likelihood of such an event, presented by the report into the
operator’s previous fatal accident, appeared not to have been taken.
I'd say the sooner that type of issue gets flagged the better off everyone is.