Until someone from the established financial sector steps in and takes the FULL step of representing Bitcoin - putting their bank license on the brink of cancellation and is ready to go through lengthy courts and is ready to publicly face the scrutiny of allowing "money-laundry" through their bank because of Bitcoin and whatever else the media is going to label them, forget Bitcoin ever reaching mainstream.
A strong system requires a strong individual, and none the less powerful to step in and take the first battle. Only the outcome of that battle will take Bitcoin to its next stage. Right now we are in limbo, and the freezing of assets is going to be more apparent as time passes.
There's another way, much harder but more resilient than relying on a single individual.
A decent Bitcoin economy where an average person can get most of their essentials without ever having to convert to fiat currency. Once the economy is established, it doesn't matter anymore what the banks can do.