First and foremost, trade show exhibits are for sales.  Not to hang in a gallary.  We get that.  Some times the design has to bend to accomodate the information in a limited space.  But,  there is a limit.  When designing a Trade Show Exhibit, think Billboard.  When you are driving down the highway, look at the billboards.  You have about the same amount of time driving by a billboard as you do as you are walking past an exhibit.   Don't try to be clever.  be direct.