Never played Frontlines, but their PC blogs have me excited for the PC version:
http://community.homefront-game.com/blog-post/homefront-pc
http://community.homefront-game.com/blog-post/pc-blog-2-exclusive-pc-features
PC Features/Info
Three control settings for flying vehicles
First person vehicle cockpits
Dedicated Server Executable
Mod tools: maybe after launch
32 players--same as consoles, but open to expanding this after launch
Low server machine requirements
Steamworks title (including VAC)
Spectator mode
Server Admin tools
No online pass/DRM (aside from Steam's protection measures)
Multiplayer practice map
Clan/Steam group support
Demo recording
Battle chat - radial command menu that gives visual and audio indicator of what player is saying/requesting
Squad support (including squad-based VOIP)
Joystick support
Competition features
LAN Play
SLI/Crossfire
3d Vision