Corp Dev Exits (Pharma)

I think it depends on what direction you want to take your career in. Typical exits that I've seen from big pharma corp dev are:

• Corp dev in industry at a smaller company. If you leave to a bigger company (relatively speaking, e.g. Jazz, Incyte, Seagen), you're likely to end up at a similar position that you're currently in, but with somewhat faster career progression. If you go to a clinical stage biotech/true startup, there's an opportunity for faster progression/to be placed directly into a VP-level position, but I think there's sort of a bifurcated career path into either IR or clinical operations/BD, the former of which I would personally avoid (based on personal preference - I loathe IR roles). 
• Buy-side at a healthcare HF/VC fund (not sure specifically what you do, but this is much easier if you're coming from an R&D or BD/M&A role, rather than some sort of financial role, e.g. internal capital allocation, etc.) Have seen people make this transition quite a few times. 
• Biotech equity research at an IB (probably at senior associate level)
• Investment banking in a healthcare/life sciences group. You'd probably come in at the associate level (I've also seen transitions at the VP level), but this very likely could require an MBA.