It certainly has potential, as any island does, but does not seem to benefit from a 'special position' as Po Toi does in relation to the Dangan (Lima) Islands in spring at least.
Also it seems difficult to work - not that Po Toi's easy but birds mostly concentrate in and near the 15-20 banyan trees around the harbour.
Tung Ping Chau received quite a bit of attention in the early-mid 90s, but never delivered the birds Po Toi has - though we had no idea how good Po Toi could be until much more recently.
Having said all that, regular visits to TPC will be very interesting to hear about!
Mike Turnbull