The two failure modes are independent
Some GPs have the relationships and a deck that doesn't survive an investment committee. Others have polished materials and no way into the rooms where allocations get decided. These are different problems with different fixes, and solving one does nothing for the other — which is why generalist fundraising advice so often produces no result.
Diagnosing which one a manager actually has is the first piece of work, and it is frequently not the one they think.
What an LP investment committee tests that a deck doesn't answer
Attribution — which returns came from the strategy versus from beta, and which individuals were responsible. Track record verification at the deal level, not the fund level. Team stability and key-person exposure. Alignment: GP commitment, fee structure, and what happens to carry if the team changes.
Almost none of this is in a standard pitch deck, and all of it arrives in the second meeting. A manager who hasn't prepared it loses momentum precisely when the process should accelerate.
Top-ups into existing structures are an underused route
Most sub-scale managers frame the question as raising Fund II. For many, additional capital into the existing vehicle, a co-investment sleeve, or a separately managed account for a single anchor is faster, cheaper, and builds the track record that makes Fund II raisable.
It is a less impressive answer than a new fund close, and frequently a better one.