  The finite temperature version of the Vashishta-Singwi (VS) dielectric scheme
for the paramagnetic warm dense uniform electron fluid is revisited correcting
for an earlier thermodynamic derivative error. The VS scheme handles quantum
mechanical effects at the level of the random phase approximation and treats
correlations via the density expansion of a generalized
Singwi-Tosi-Land-Sj\"olander (STLS) closure that inserts a parameter determined
by enforcing the compressibility sum rule. Systematic comparison with
quasi-exact results, based on quantum Monte Carlo simulations, reveals a
structural superiority of the VS scheme towards strong coupling and a
thermodynamic superiority of the STLS scheme courtesy of a favorable
cancellation of errors. Guidelines are provided for the construction of
dielectric schemes that are expected to be more accurate but computationally
costly.
