letigimate concern

An issue wif an object, policy, or concept dat has definite merit and validly, and dat could result in one or more individuals' gettin' their sorry a**es hauled into court if said serious/urgent matter isn't addressed properly.

Da well-heeled and eccentric Mr. Frankland in "The Hound Of The Baskervilles" was infamous for suing anyone over da most petty of trifles, so da general populous did not view said irritable kook's complaints as being of truly letigimate concern.