Well, they used to alternate it between 'SentUAMessage' and that other show they do, 'The Insiders' so they aren't just putting out the same show the whole time, even though they are essentially showing the same sort of content.
I think in general though the whole Inside Xbox thing is increasing more and more, as the UK formula has been replicated in other countries. With that I think they are spending more on doing it and they also want to keep it fresh I would have thought, so that's why they've made 'The Nexus'. You can see that they've greatly increased the length of the show, but I've got to agree that the first episode didn't really do it for me.
Some of the episodes of 'SentUAMessage' were absolutely hilarious, even though it's no-budget stuff. I would imagine it might be back once they finish their run of 'The Nexus'.
You could always send @SuperKaylo or @MrPointyHead a tweet and see whether it will be back.