I suppose we're blessed with instant-fix Time Team, with assumptions being made on the spot, but to have what appear to be two ditches and read no comment on them is frustrating. Nobody expects a carbon date, but an educated guess would be nice. It doesn't have to be conclusive, "It's a hill on a henge", but it would be nice to know the thoughts of those on the ground, rather than a sterile weekly report.
The image? Well that speaks for itself.
In terms of the specifics, they haven't said more because they don't know yet! I believe they've found more stuff in the past couple of days (I could be wrong), so perhaps that will be in the next report. There's no point in making speculations at such an early stage. Sure it may satisfy curiousity and may turn out to be accurate, but I'm sure we can wait another week or so and know something concrete. Where speculation is useful, it has been put in. Read the reports and see.
Time is set aside for the archaeologists to work on them, to the extent that they're allowed to fit their other work around it, and can go and spend a few hours writing up notes, talking to the other archs and engineers, taking and assembling photos, preparing the report and so forth.
I don't know what other archaeological digs you're familiar with, but it's pretty rare to get anything close to this level of information while it's going on. Web updates, photos, videos, a visitor information point on site, staffed seven days a week by archaeologists who can answer questions, show finds and so on. The idea that they should employ someone full time in an office somewhere purely to write weekly reports seems a little bizarre to me. Are we that impatient? The updates let us know what's going on (and provide some interesting detail). The full site report will be published later, which will have all the nitty gritty detail and conclusions. That will be written after they've been able to appraise the whole project, run tests and so forth. It seems that people are expecting a Time Team Special or academic paper every week. 1000 words, six pages. I don't know what everyone's complaining about. The reports have plenty of interesting information to me.