vyatta-lldp is a small and low impact package, and thus a perfect candidate for the rewrite even at this point, to see how well the new procedures work and adjust/expand something.
Additionally, it has one of those old design issues, the Perl script manages the daemon and configuration is created by stringing daemon command line options together. It might have been warranted at the time since, I seem to remember, lldpd didn't support config files. Now it definitely does so that issue is irrelevant.