The ballroom has been needed for a very long time and should blend well with the existing White House. I am not a fan of the Arch. It is just not in character with the other monuments in Washington. It is fitting that there should some type of monument to our 250 year of independence, but not a Napoleonic arch.
How about a sculpture of Washington in his boat crossing the Deleware. The painting looks great and could be copied, with some corrections.
AI listed a number of errors, but the corrections I would like to see would show Washington as his 44 age at the time not so much older, also the correct flag of that time. Other corrections like the much larger 40 to 60 foot cargo boat likely used, the middle of the night in a raging snow storm, and probably a less diverse set of participants should probably not be an improvement. What was painted is a dramatic bit of patriotic propaganda, which still told a good and basically true story. It definitely honors the difficulty and success of our independence struggle.