I agree with the general sentiment but I think the fact that Wyndham arcade doesn't look contemporary and modern is part of it's charm. It acts as a nice counterpoint to the library and SD2 as do the David Morgan buildings.
All of the shopfronts have been renovated so that they are all alike and there is now a pleasing symmetry which there wasn't before when Kiwi's was slap bang in the middle. There is also a nice mix of tenants down there - the Italian cafe, Bills, Ask, the hairdressers, the famous Bear Shop, Baileys, a tailors etc. Something for everyone.
Waterloo tea rooms look to be taking 2 units knocked into one so I think the arcade will almost be fully let when they move in.