I agree that LH's Senator lounges are often too crowded because of the STARGold entry rules. However, this is in part created by the fact that STAR only has two elite tiers and Gold can be achieved relatively easily in all programs but M&M.
STAR should at least distinguish between programs 35K/50K/75K STARGolds and those who earn it at the top tier 100K threshold for Senator lounge access. (And no, I am not advocating those 100K elites get access to LH's FCLs or those of any other carriers having such facilities...though that would be a nice enhancement.)