Having been an owner of a Thylacine myself for a few months now and knowing Robert Tsien (The Designer) personally as he is a member of our user group, I can safely say that he is busy fixing all the problems you have mentioned.
The mouse and keyboard issue is very high on his list of priorities as he has only been able to start work on that due to the fact that my USB mouse was the first one he has had to test things properly with.
On the issue of buggy chipsets, there were very few chipsets to choose from when it came to interfacing with Zorro II. The chipset Robert used in his design is primarily used in embedded devices.
What you guys seem not to realise is that Robert has only done all this hard work to support the Amiga community. Critisism is welcome but don't forget that only a few months ago we didn't have USB connectivity so we should be lucky we have people like Robert.
On another note, the Ethernet adaptor drivers work quite though there are still some bugs to fix. Robert demonstrated the adaptors at a recent meeting and everyone was so impressed, many of us who own a Thylacine are considering buying an adaptor. The scanner and printer drivers work quite well although there are still issues with the Epson C70 printer that Robert is working on.