when a company starts looking for a lead designer to me that screams someone else has already been let go or the company is looking to do some replacing
I've never been under the impression the game had a lead designer, at least initially. Right now, it feels like a potpourri of developer and player, mostly mechanical, input. It's design is haphazard, as though they've been making it up and learning as they go; throwing stuff against a wall to see what sticks, etc.; as opposed to structuring it around a set design document with an established identity/purpose and specific design pillars, which is not a bad thing in and of itself, but is...let's say...a somewhat unconventional way to go about it that I, at least, can somewhat appreciate. It's been experimental, ergo I haven't felt it necessary to hold TFP to the same standard I would hold some other development studios.
Novels generally start out with an outline. Video games generally start out with a design document. 7DTD seems to have started out with a rough idea of what it would be like -- namely, a survival game with RPG elements: something manageable in scope, though I think they may have lost sight of that scope at some point, ambition overriding practicality. TFP always struck me as a smallish, family-owned business much like one for which I used to work. It started out as a middle eastern retailer; became an export company when the family (whom I came to consider family) relocated to the States; and transformed into a SaaS developer with a commercial real estate wing. (<-- Yeah, I know.) So, my impressions may be biased.
If it ever was, it is a smallish to medium-sized, independently and family-owned business no longer. Now, it's owned by an investment firm (essentially) and it's apparently time to get "professional." I imagine a lead designer will be tasked with pulling all its facets together and into a coherent whole, providing it a recognizable identity, and sign off on any future development after story and bandits are in as (I imagine) a live service game given BI is looking for someone with live service experience. BI will be guiding TFP from now on in my understanding -- communications, marketing, development. Not sure how I feel about that, actually. Most video game development studio owners don't guide so much as dominate and interfere from what I can tell despite their promises not to dominate and interfere.
Of course, my impressions of TFP as formerly a smallish, independently and family-owned business could be wrong. So much for impressions. I only know for sure the game is headed in a specific direction. There will be an audience for it whether or not I'm in it, so good luck with that, I say.