FFA was a lot of fun from the little I've played of it.
Personally, Ratchet & Clank is a franchise that can't seem to win.
At first it was, "Wah, wah, the formula is getting old, we want something new from Ratchet & Clank!"
Insomniac was like, "Ok, here's something different, 'All 4 One,' and 'Full Frontal Assault!'"
And fans were like, "Wah, wah, I miss teh tranditional Ratchet & Clank, not this experimental bullshit!"
Insomniac was like, "Ok, here's 'Into The Nexus,' which is more like the standard Ratchet & Clank!"
And fans were like, "Wah, wah, it's too safe! It's not breaking any new ground!"
Insomniac was like, "...Fuck this. We're making Sunset Overdrive for the Xbox ONE. Maybe Xbox fans won't bitch so fucking much..."
I think All 4 One and FFA are underappreciated, and I fricking LOVE traditional R&C, with Up Your Arsenal and A Crack in Time being my favorites. Even though I'm not madly in love with A4O and FFA, I can appreciate Insomniac at least trying to expand on the R&C formula. But I'm glad Into the Nexus is more traditional. Really enjoying it so far. The thing is, I don't think Insomniac has ever made a game that I didn't think wasn't fun. From Resistance 1, 2, and 3, to A4O and FFA, Insomniac makes fun games. I only played the demo of FUSE, so I can't speak to that one, but their track record is pretty rock solid overall.