I think they're quite beautiful. By sacrificing the simplicity of the basic verb constructions (which simplicity has a beauty of its own, related to its economy,) periphrasis adds convolutions, which - when used judiciously - are able to 1) add complexity and texture for those who appreciate such things, and 2) express subtleties of thought and expression that may be lost with simpler constructions.
I could not have put this better, but I am looking for help to answer a simple question should I use a longer sentence if I want to do away with the severity that brevity imposes at the cost of everything beautiful that brevity has to offer? Also will it be correct to generalise that brevity is of the intellect and wordiness is of the senses? Would that mean haiku works a dyptich of brevity and sensuousness? (3 questions. The first is most important for me. Thanks for your thoughts on this.)
