There are three 1080i50 project presets in Motion 2.0 - for DVCPROHD, HDV, and regular HD.
But, you can very easily create your own setups in Motion via preferences. Go to the Presets icon and choose "Project Presets" from the Show popup button. From there, you can duplicate one of the existing ones and change it however you like, or create one from scratch.
You can also do this right from the New Project dialog by choosing "Custom..." from the menu.