To put it briefly: almost everything! It is just a question of time and the involved financial expenditures, for which solution you will finally decide.

So, if you want a website,

1. where you can reach and talk to your visitors personally
2. every movement of the mouse creates another surprising effect
3. the visitor can shape the website himself
4. or your customers have direct access to your data pool...

...talk to us. Nothing is impossible!