Thats an issue with phoenix emulator itself.
However if your cms is on a web server which allows cron jobs, you can automatically 'restore' the users daily respect limit by simply updating the field in the database
Yeh a cron job is the way forward, however this will be a regular problem for the noobs that know nothing about cronjobs and/or cant use a webserver and a vps together. Aaron does have a valid point thoughOn the Phoenix issue, it's not, Aaron said himself it's pointless when a cron job can do it. - The second bit you said is correct, I believe RevCMS 3.0.0 has some built in cron jobs for this.