To build on top of the ideas already presented, The future service platform could use ICG as a form of payment solution with the focus being anonymity.
Perhaps it wouldn't neccesarily be a platform but instead integrated into the wallet. Either way whether a service built upon ICG within the wallet or in a separate application should be able to communicate across multiplatforms to make it viable. Eventually that could lead to the development of additions to the ICG network beyond the recording of transactions into the block chain.
The ICG team would need to grow with the addition of more developers first. Although it's a good future feature to consider as there's a lot of possibilities as to how block chain based services could be managed.
True, though now would be a good time to brain storm ideas for future network development if such a decision is made. The past suggestions of voip, chat, file-sharing, and vpn sound like good plans and at least not too difficult to implement.
We could also try to make a decentralized exchange on top of the service platform as well. P2P anonymous file sharing could also be integrated and supplement the VPN feature.