"Improprieties" is a bit vague. If someone committed a criminal offense I am sure that the Trump DOJ will prosecute them, no matter its severity. If for example there was evidence someone fabricated a document, sure, that should be prosecuted.
But if by "impropriety" you mean that someone, or someones, made a judgment based on the intelligence that 7 years later turned out to be wrong, I'd probably not agree.
In the end, we all know that this is for show and that the GOP House committee members and others will feign shock and dismay at what they say they are finding, and it won't amount to anything real. And it will cost the taxpayers $10 or $20 million to generate sound bites for Newsmax and Fox.
I personally grow weary of it.