A Threadripper with 24-32 cores but only 2 channels of memory, that worked in the AM5 socket, would fill a nice hole in the AMD story. I don't know if AM5 has enough power pins to do the job, though. If you want more than 16 cores right now you have to spend $2k on the CPU and motherboard, triple what it costs to get a 16-core Ryzen.