Workshop

I suggest allowing players to choose any combination of non-destructive abilities and special abilities, but with a base cost of two, and one when healing.

Yes, I also tend to think that without healing, two should always be removed, regardless of whether it's a non-destructive ability or a special ability (unless it's the Haruspex, as he has his own system). As for the free choice, that's also good; it will give the player more room to plan their actions.

Not necessarily. He can "banish the plague" later.

In theory, yes, but the chances are slim. First, the Bachelor needs to arrive with a night patrol during the infection, so Clara can learn about the infected player. Then, she still needs to decide to use her ultimate ability on him (which wouldn't be the best choice).