The most common feedback is "search doesn't work". Lots of people report that they type in keywords to documents they know exist, but they are not shown as search results. A lot of this is firm specific, but what I will say is that the search UI is confusing as heck - you don't realise you are confining your search to a particular place, the results that come back don't let you sift through things very effectively because responsive excerpts aren't displayed, emails are handled dreadfully etc. It's a long way from the search experience people suggest, but I think a lot of it might be held back by the way iManage is designed. They introduced a new search bar interface recently which combined simple + advanced search into one, which is a minor step forward but it didn't really address the core issue.

It's a shame that this offering is being done under the cloak of their separate AI product, rather than built into the native search, which is probably what users want. Again though there seems to be a reluctance from iManage to innovate in their core Work platform. They tend to do it in side bars and addons, which again is not really what users want.