The Company has very little leverage after a term sheet is signed especially given a standard no-shop provision. You want to reduce the number of items that need to be negotiated later in the process as much as possible.
This not only reduces the likelihood of having to agree to a less than favorable term that was not addressed in the term sheet, but also reduces legal costs (which the Company is paying).
The post does make note of this:
> Some great investors still send longer term sheets, but this has more to do with their preference for going a bit deeper into the details at this stage, rather than deferring this until the definitive documents. The definitive documents are derived from the term sheet and are the much longer (100+ pages) binding contracts that everyone signs and closes on. It’s common to negotiate a few additional points at this stage, though deviation from anything explicitly addressed in the term sheet is definitely re-trading. Also, in a few places, this term sheet refers to certain terms as being “standard.” That may seem vague and circular, but term sheets frequently do describe certain terms that way. What that really means is that there’s an accepted practice of what appears in the docs for these terms among the lawyers who specialize in startups and venture deals, so make sure your lawyer (and the investor’s lawyer) fit that description.