Will Big Finish recast Victoria?

I could see it happening. But considering how recent Deborah Watling’s passing was I doubt it will happen for the foreseeable.

Everyone will be recast. EVERYONE!

Really shouldn’t be that hard when it comes to new companion it’s simply a matter of creating feasible gaps. And which they’ve been very successful in doing so, so far.

There's also the question of whether the structure of the plays require recast actors. Ben and the Brig (and, I believe, Dodo) were reintroduced because their absence was causing problems (too many lines for Hines, reduced UNIT stories for the 3DAs, and I believe low opportunity for using Maureen O'Brien as Vicki). I'm not sure whether Victoria is a required character in the same way, at least not at present.

Peter Purves's feelings about a recast of an actress he'd worked with relatively briefly more than fifty years ago could very well be different than Frazer Hines's feelings about a recast of an actress he worked with for several years on the show and has done multiple Big Finish audios and conventions with.

I can't speak to his feelings on this matter and maybe he'd see it as honouring her legacy, but I could easily see how he might not be comfortable with it and I don't think any actor should be put in a situation where they don't feel comfortable.

Recasts are probably inevitable as time marches on, but this one might be a while off since Big Finish seems to be focusing on 6B at the moment and that's a whole new era to explore.