We definitely have options. In my game as TL Archaon was buffed up and only took 3 or 4 wounds off my EotG with only steg crest, AoD, and a 6+ Astrolith ward. And the engine isn't even that tanky compared to other things out there. And my opponent had picked slay the warlord as his tactic which basically sealed the game when he failed to do so
I think Seraphon is still well equipped to win games in the godhammer meta. I think Coalesced lists may struggle to kill most of the big gods but they are still able to tie them up and win the game, which is ultimately what's more important.