This isn't being "lazy"

Switch from your DoW to your DoL, see your GP? it's at 400, right?
Now switch from your DoL to your DoH, see your CP? is it at 180? No, it's full

Why is it wrong for DoL to receive the same treatment? the OP is not asking for the base 400 GP to be buffed so he won't need to overmeld or equip accesories. He isn't asking for GP to fully regenerate to full either. All he is asking is for your GP to be able to naturally regenerate for more than the base 400 GP while you're in another class. So when you change to your DoL class after say, 10 minutes from the last time you used your GP, you would be at full GP instead of being at 400/6xx

DoL needs to change classes 2:30 to 3 minutes before a node just to have full GP. And using Cordials isn't an option if you want to chain 3 or more nodes with 1 to 2 hours between them (For example Chysal-Adamantite-Morel-Cuprite)