Lawmakers on Tuesday challenged plans to move part of the university system’s budget to a system that penalizes campuses for performing poorly, with some arguing the formula doesn’t do much. “I have concern about your all-stick/no-carrot approach,” said Assemblyman Andy Eisen, D-Las Vegas. He added that the formula is built in such a way that “it would require an enormous change to see any real dollars.” Eisen said he favors rewarding institutions for good performance. “But it seems to me what we’re looking at here is significant work to track all this data, and the end result is for the …