I'm really happy with the latest round of changes that will be deployed in 2018.1 for Gantt. They are a good start in the right direction! One thing our PMs would really like to see is an Option in Gantt Settings to display a vertical line down the Gantt that indicates TODAY (the current date). Having the ability to display this will immediately provide a nice visual of where there project is actually tracking in respect to the current day on the Gantt Chart.
The TODAY option could look similar to the Milestone Diamonds option that is currently available, but possibly display as a red, bold vertical line.