SCP-194 would be perfect if we can make a creature called a crow without making the currant one obsolete.



SCP-273 could work, if we can somehow shove in a rare secret that may or may not be passed around in world gen.



SCP-383 could give a creature increased stat learning rates at the cost of them throwing up and such.



SCP-549 would be made out of slade, for giggles.



SCP-548 would be fun, and experiments with the new syndromes could lead to fun times.



SCP-597 must never, ever be attempted to be modded in. Ever.



SCP-746 could be fun (skilled fighter? Check.), also one of my favorites. For some reason.



Also, mini petrasaurs: the new cats?