New Debian leader seeks more innovation within project (ITWire)

I really wish that Debian can improve its package management.

Quick questions:

1. Can APT and aptitude be used in same machine?
2. Is aptitude ready for Multiarch now?
3. Is Synaptic still maintained?
4. Why dpkg still recommends dselect and aptitude while doesn't mention APT at all?
5. Is dselect still relevant?
6. Why APT makes hold/unhold feature almost invisible?
7. How many people are aware of apt-mark?
8. Why running apt-mark without arguments do not show hold/unhold commands?
9. Is delta update possible? [1]
10. When something go wrong, can APT be less frightening? Fixing APT issue is really like a black magic.

Reference:
1. http://static.ww7.be/ms_fud_of_the_year/569458-microsoft-...