I used to use tap to click exclusively, but after living with Force Touch for a while now, it's absolutely an improvement, even without Apple making much use from the secondary click or other features it will bring. The click is much more reliable than the tap, requires less finger movement to activate, and for fine pointer control, doesn't require your finger to leave the trackpad before making a selection.
Another former tap to click user here. The other major improvement with the new trackpad is being able to click and drag things around the screen without having the pressure required to keep the trackpad "clicked" changing from the top to the bottom. It's a major improvement. I wouldn't sell a computer to upgrade the trackpad, but I'll never buy another without the new hardware.