I've custom built a CRM for my lending business, essentially replacing about $500 worth of software (sick). The only thing I have left on GHL is my AI assistant, and I'd prefer to just connect it directly instead of finding another service or building a shitty version.
I'm also planning to offer this CRM as an all in one SAAS, and would have the AI as an upsell.
Love the service, literally haven't changed a thing since my initial tweaking and it's worked great. Probably a lot I've missed as I haven't been in the channel.