I think we discussed this earlier too. Any capital city should have good access, good infrastructure for administration, financial and commerce establishment governance and offices. The infrastructure should also showcase the state's resources and ability to attract foreign and national investments. This would need quality and some grandeur so that local, nation and international community feel welcome and would be confident to visit either for tourism or for business investments. One should be careful that money is not misused by corruption and few individuals to benefit.
Some authorities in power go on to have a fleet of imported vehicles, custom-made cars and vans, purpose-built offices for individual needs, these things should be curtailed.