Firstbits support?
It is easy to implement.
If enough people want that feature.
Yes, the people want the firstbits so they can write them on their bodies.
Bitcoin seemed to take a lot longer than the other chains to load up even though it seemingly isn't pulling up much data for the first page.
Also you could default to Bitcoin since the majority of people will want that. And then put links to the others on top, bottom or side.