Bitcoin PM's seem to have gained limited success but I would be excited about prediction markets too.
While BitAssets 2.0 will be huge, it might take a while. BitAssets thus far have gained limited traction (BitReserve $1.7 million, NuBits - $0.6 million BTS 1.0 - $0.3 million)
However in terms of volume, profit and user numbers many new Bitcoin gambling sites dwarf BTS. But the BTS 2.0 specs can compete with centralized sites on performance and BitUSD + a decentralized blockchain (fairness, security, privacy, volatility and price) can decimate Bitcoin's largest industry.
So anything like PM's, Games and creative ways to add gambling I would be in favour of. This is where the money and opportunity to rapidly bootstrap BitAssets is imo.