A Realtor's experience is only as good as their last 20+ closed deals during the past 12 months. No longer should Realtors skate-by on the declaration "I have been in this business for the past 20 years...".
The "business" of Real Estate is far more than knowing where the community pool is located and which neighbors are the ones that people talk about--everyone can figure out the community map and local "gossip". Having an Expert Perspective on a community requires real-time experience and MLS research.
A robust listing of a home is a function of Marketing and Online Advertising--not Salesmanship. Listing Agents almost never bring "the buyer" to your home and the Listing Agent and their brokerage will almost never be the one that sells your home. The internet has changed this dimension of the business forever.
Having as much information as possible on the history of a home, the seller and what is going on around a specific property is critical to strategic negotiations. Since Texas is a "Non-Disclosure State", published public information is limited to the guesstimates that the county uses to determine tax value in a zip code, not based on actual sold sales data from the MLS.
New homes are a unique corner of the Real Estate Market and your Realtor should be well versed in all the normal aspects of Real Estate (community, comps, growth, schools, etc), and the Realtor should understand Time to Market appreciation of new communities, Construction, and when a new home builder is most likely to negotiate on a particular house and to what degree. It's a whole different ball game and the strategies are different out of necessity.