I'm also thinking that since I've read many posts about Project Phoenix owners being on the fence over the Saber pack, the Phoenix variants of the Griffin and Wolverine might not be as common of a sight in-game, so someone has to pilot them and make it known that they're around

I know, I could've spent my $30 on the MC sale and got any hero 'mech I wanted, but 'mech bays were a big deal breaker for me. I was really thinking about saving up for a Clan 'mech pack, but I find it highly unlikely one will come out soon, since they're only planning on revealing one new Clan 'mech (per a recent Command Chair post). In a NGNG review, I think the boss said that there won't be any Clan 'mechs until MASC is figured out and implemented.
Anyone else making the last-minute choice to get the Saber pack?