The WTBTS Convention Committee is hardly competent enough to organize small venues of between 4,000 to 5,000 attendees.
The thing is, the old version of the org at least used to be very good at running these things. Considering they also used to have a bookroom and releases to give out, food to distribute and so on, the whole thing used to be a (relatively) slick and well-oiled machine, even in huge arenas and stadiums. I remember working at a few back in the 90s and early 2000s which seemed very different. Today, it seems they can't even organise and run small events of a couple of thousands properly.
I suspect that some of the factors that have caused that are that there are more stifling rules and fewer capable brothers around - others have pointed out that the "old" org used to attract brothers who were at least fairly competent organisers and had some basic skills. Some were war veterans and many had run businesses or been involved in other more complex work before becoming JWs, rather than being born-ins who'd only ever aspired to pioneer or go to Bethel.
The last time we had major conventions were the internationals in 2014 I think, which is nearly a decade ago now. The org is talking about having more internationals next year, but I'd be surprised if they are as well organised or well attended, and feel as interesting or important as the 2014 conventions (I think they were still called district conventions then?)
The so called bible character based videos were notable in just having the actors ruminate on imaginary scenarios cooked up in Warwick to strengthen their argument.
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The main feature length drama was strange.
That's another important factor. Videos now have become so commonplace as to be boring, and the content of many is very dumbed down or unbelievable.
I remember the impact the resurrection video had at the 2014 convention - some of you may recall it - the one featuring the JW woman whose sister had died in hospital, and how it went from her being wheeled into the operating theatre to her dying, then later her being reunited with her sister in the resurrection. Cheesy, perhaps, but actually it was done quite well and it had a very dramatic impact. Many bros and sisters were crying. It was one of the first convention videos (if not the first?) and the impact was on the basis of "less is more" - there was no attempt at tacky dialogue, or making a soap opera style story like Neeta and Jade or this year's offering. Compared to now when every flipping item has a pointless video segment.