I think I’m late to this party, but just in case you hadn’t been invited yet either:
There are some ongoing studies to examine the effectiveness of low dose Naltrexone (LDN) as a therapy for Crohn’s. The preliminary results show promise and Penn State has a couple of phase II studies in progress.
Naltrexone was first approved by the FDA for treating chemical dependencies although as the name LDN suggests it is used in smaller doses to treat Crohn’s.
The use of Naltrexone for Crohn’s is currently “off label” and you may find it difficult to find a doctor willing to prescribe it to you. I’d be interested to hear you experience.
I have no experiece with LDN and can’t speak for it’s saftey or efficacy, but it’s always good to hear about more options.
General LDN info at lowdosenaltrexone.org
Eating SCD 
A lot of “noise” has been brought up about this one both amongst Crohn’s patients and even SCDers. Like you said, it’s good to know there are less invasive options to immune suppressants, biologics, etc..