+ posco : ask for, beg, demand, desire --- money, mercy, letter, him to drink, him to sing, that he should ...., etc. + crimen : a judgment, charge, accusation, reproach, slander / crime, fault, offence
No, I think it's a request not for advice but for a decision or judgement, from a judge, say, or from the reader. Non est admonitum desiderare sed crimen seu arbitrium desiderare, e judice enim vel lectore.
Yes, posco means also to request in English. Ita, et desiderare significat poscere.
I'm writing in Latin hoping for correction, and not because I'm confident in how I express myself. Latinè scribo ut ab omnibus corrigar, non quod confidenter me exprimam.