Kit’s ability—I’m talking Stealth Kit here particularly—maxes out at once per turn, so this means you are aiming for one impactful run per turn, often on the second or third click. (Indexing is excellent in Kit, but it’s easier for the corp to tax your stealth credits than Smoke, making the second run a hit from which it’s hard to recover.) As such, many people have discovered that Maker’s Eye and Legwork are as good in Kit as any more surefire but costly multi-access (RDI, sometimes Indexing). It’s possible that folks who are running non-stealth builds are able to jam more straightforward econ, but I’ve never played non-stealth Kit because Refractor is best decoder.
All this to say that Temujin can support your runs and is almost too good not to include, but often is only replacing the real credits you’re spending on the run rather than making you any money. Ultimately this is what you’re aiming for in Stealth Kit, which is to say credit replacement or minimizing the loss or use of real credits. Kit will never be able to contest a Midseasons because of this so don’t forget to bring a Film Critic.
A lot of people have gone the other direction and included Stimhack in Kit lists to go all-in on burst econ. I might consider Cold Read instead as an organic, artisanal Stimhack that goes with Net Mercur.