That's a good suggestion, in fact it is in line with what we've been doing (though it might not always seem like that). We started back in 2009 going through some of the MN suttas in the sequence that Bhikkhu Bodhi used for his talks on the MN, and his ordering of topics in "In the Buddha's words". viewtopic.php?f=25&t=345#p3354
After that, among other things, we worked through the Sutta Nipata. I took over towards the end of that. viewtopic.php?f=25&t=345#p86854
For the past three years we have been working through the Samyutta Nikaya, using Bhikkhu Bodhi's suggested sequence: viewtopic.php?f=25&t=345#p88300
We have almost finished Part V, which is to do with the fourth Truth. We are now on the last Samyutta, specifically about the Four Noble Truths.
In this time I alternated the SN thematic suttas with other suttas, and left the threads open for two weeks. Sometimes the alternating suttas are in the theme of the SN suttas, as with this week's sutta on the Noble Truths viewtopic.php?f=25&t=18086
Sometimes they are a contrast.
I have SN 56 and other suttas on the Four Noble Truths in my notes for about the next six weeks. That leaves the "minor" chapters that don't fit into Bhikkhu Bodhi's thematic sequence.
My plan is to alternate some of those suttas with suttas from the Anguttara Nikaya, using the thematic sequence that Bhikkhu Bodhi has devised in his new translation:Numerical Discourses of the BuddhaThematic Guide PDF
That should keep us going for a while...