If next year's streams are going to concentrate on robotic and motor applications, this might interest quite a lot of people (including me), but I think a lot of users are more interested in soft cores and retro computing.
If the focus is to be on nmigen and micropython, then it might be interesting to have a collaborative project to build a retro computer using nmigen, possibly with streams dedicated to this.
One possibility for this is to build on Robert Baruch's m6800 nmigen project, as there are already streams describing how that was built.
I would like to see that evolved into a retro computing project. One computer that used the 6800 CPU was the Tandy Color computer (Coco), and in the UK (actually Wales), the Dragon 32/64 was practically a clone of this.
I don't think it would be that hard to produce a working nmigen version of these using the n6800 cpu. It would need a video circuit. It uses a Motorola MC6847 video chip which I don't think is very complex, and there are already Verilog implementations, for example in the Acorn atom project.
It needs a keyboard. I already have an nmigen driver for a PS/2 keyboard.
For memory it should be able to use BRAM, at least on the Ecp5 boards.
Other things such as sound could be added later.
Micropython could be used to read games from an SD card and write them to the fpga memory using SPI. An on-screen display (OSD) for choosing games could be added later.
Does anyone think that sounds like an interesting project?
Another possible nmigen project is a simple SoC using the minerva Risc-V cpu.