For me, i personally keep the left panel collapsed most of the time. I find the search box the best way to find teams, projects or anything else. I do find that searching conversations is really, really not good. For example, if you had something in your Inbox, then archived it, but want to find it weeks later, it’s is nearly impossible to do this in the search (even with advanced search). But that’s a side note. I just keep the tool bar hidden (x’d out) and when i want to find a team, i search and it pops right up without having to scroll down to find the team, then the project.