It will be a different type of tactical depth. Legacy has these tactical elements:
1. 3D movement
2. Tactical warping
3. Environmental effects on targeting and detection (i.e. actually hiding behind a planet or asteroid, nebula effects)
4. Subsystem targeting
5. Cloaking, obviously
6. An array of differing weapon systems
7. Customizable ships
8. Command of up to 4 ships in a player fleet
I think a better SFC3 is a good analogy is this instance. Obviously, SFC2 just has more of everything, but I think Legacy will have something to offer that we have not yet seen in Trek gaming.