[ska]

The main problem isn't supporting other text fonts (including TTF), but the fact that those fonts don't properly support the symbols.

So all in all it's a bit of a nasty aesthetic trade-off. There are several packages that attempt to create symbol sets to match things like palatino, with varying success. Some are just terrible. And there are a few commercially available ones that do support most if not all symbols, so if it's worth a few hundred dollars to you there is that route.

Nothing has great solution for web, really. We're slowing moving from execrable to ugly but at least it is progress.