Pros
Some very hard working and good people in the mix there. DCI business model also is pushing lots of work their way as opposed to 3rd party production companies, so steady, ongoing employment is more likely than at smaller companies.
Cons
Corporate connection to Discovery parent co. & its deep pockets creates a massive amount of additional work over comparable productions for independent prodcos. Everything must be vetted from perspective that you could theoretically be providing the defense of the parent company from a lawsuit. For example, a shoot involving an adult mowing the lawn would require a few lines of explanation regarding shoot safety on a normal production, and maybe a double check of the liability clause in the release of the on-camera participant mowing the lawn. At Studios, the mower could result in a separate production meeting, paying a safety tech to be on site for the mowing, a five page safety plan, and a 3-4 page indemnification statement from both property owner and participant running mower. The situation is mostly understood by all at Discovery Studios to be incredibly inefficient, but its baked into the reality of being directly owned by a 35billion dollar corporation, rather than an independently owned production company.