I really don't have a problem with current system. If you synth what's the name "currant" its' a used item that replenish 300 gp (with cooldown). I think it's craftable also...alchemy?

What I find helpful to regain gp is simply harvesting nodes for crystal or just plain resellable/crafting items. You get 25gp/node and can quickly regain entire bar rather than standing around waiting for the tics. I tend to use this after a gathering leve...who doesn't need crystals?

I wouldn't mind a job action that bumps the number of tp return say...double per swing for say for 25gp? Though, this would break the leve challenge somewhat if you could use this to regain gp on regular node and then gather leve node. So maybe not.