If you're not 100% sure you want to leave Hertz yet, why don't you have your President's Club status-matched at National? That way you can explore the benefits at your regular airports for a month or two.

Here's the link for the benefits of a National EE (emerald executive):

https://www.nationalcar.com/en_US/ca.../benefits.html

You said you like earning free rental days for personal use throughout the year. As a National elite member you should get plenty of free rental days renting 2-3 times a month. Plus, don't forget the National 1-2-Free promo that runs once a year.