Yes, I am also eyeing some of these too.
Obviously concerns would be:
1. Loss potential of levered CEF's due to the ARP situation and funding issues which will ultimately come out of net invest income. However, note that a 25% discount might mitigate that somewhat.
2. illiquidity
3. creditworthiness of the underlying issues, which might be a real concern coming up. Some of these CEF's have swap exposure, which I can't really evaluate.
OTOH, with a Obama presidency, I would imagine that top shelf muni bonds would be in great demand.
Anyone else want to contribute? OP, PM me if you want to share info and attack these together. Plenty of room here for that.