So Bill Gates wants to re-invent the loo. Well good for him.
If Microsoft is a guide, there may of course be disadvantages:
1. It will be vastly over-complicated.
2. It will come with inadequate documentation.
3. It will be unable to resist viruses.
4. It will be plagued with bugs.
5. It will need a major upgrade every second year.
6. When it stops working, you will need to switch it off, cross your fingers (or your legs) and then turn it on again.