I want to share that I believe the backbone of the ethereum ecosystem and economy will be a collection of simple tools that are commonly used by the ethereum economy. These simple tools perform one objective and do it well. If that tool is improved, dapps will start to upgrade to the new component which can be hotswapped with the obsolete tool. The economy will become built on highly modular use-agnostic platforms that do one purpose. They will likely spend the majority of their time without serious competition as typical choices for dapps to use. Any additions or subtractions to suggest for the list below?

Core tools (shovel sellers in the gold rush) should be:
* Internet sourced Objective Truth Determination Oracle
* Directly sourced Subjective Truth Determination Oracle (including physical inspection and A/B testing capability)
* Risk Assessment
* Prediction Market
* Investment
* Insurance
* Loans
* Exchange
* Stablecoin
* Offchain Data Storage
* Offchain Computation
* Offchain Transactions (Raiden)
* Random Number
* Task planning and merit determination system for employees
* Transportation & Shipping
* Website Hosting (decentralizes control of a website or social media account allowing ethereum transactions to cause changes to website code by hiring trusted 3rd party to make change to website.)
* Legality Hosting (decentralizes control of a legal identity to a service that files requested paperwork. possible?)
* Physical Security (platform for hiring services to reduce risk of damage to physical assets)
* Software Security (a service that allows ethereum transactions to trigger a security audit of specific code)
* Bug Bounties
* Identity (simple database keeping track of facts about unlimited number of identities)
* Unique Human (either anti-sybil subjective analysis, or objectively whatever service is able to provide the highest purity in regards to human profiles / total profiles)
* Objective Quality Score (a system that makes sense of untrustworthy input in a way that most closely predicts how actual humans will react on average to a product or service)
* Subjective Quality Score (predicts how much you will enjoy doing business with a goods or service provider by analyzing your other trust ratings with those from sources of judgment you already trust)