The merging of 401(k) and 403(b)?

It’s definitely not official, but there is considerable talk about the narrowing gap between 401(k) and 403(b) plans. Therefore, the need for both types of plans is questionable. Some of the primary issues that separate the two plans are the special contribution limits for church and 15-year and permissible investments. So, while regulatory trends point in the direction of consolidation, there are numerous hurdles to overcome before a merger is realistic. What about you? Do you have an opinion?