If I want a card that is stable against SOA I'll go with Sledg. I am a fan of Lothar in theory (don't have him) but the main reason I put Norton in there is to combat the inevitable Ambre/Bangers combo. Sue seems like a good card to swap for Lothar. Also what about Marco Cr -> Cliff?
So you currently have:
Marco Cr, Sledg, Lea, Elvira, Lothar, Buckler, Joana, Dr Norton
I would flip Marco Cr to Cliff due to:
-The revenge condition makes people wonder if you are throwing the round to activate SoA
On the other hand, 9 pwr is awesome in Rescue...
I already have Cliff in the deck instead of Marco Cr, mostly because I already had Cliff and Marco is expensive for a card I can't use all that often.
Cliff has worked alright so far. His 6 power would make him unusable in any other clan (hooray for silly bonuses!), but his 8 damage has made for some good KO threats.