As somebody who has *had* plantar fasciitis, not a small thing at all.

(I'm lucky. Mine was caused by a poor choice of shoe, although I do have challenges with some shoe styles because of the common wisdom that everyone needs more arch support and the fact that women's shoes don't often have removable insoles...so all high end sneakers give me plantar fasciitis. If anyone reading this is nodding along, the solution may be Dansko's).

Plantar fasciitis is extremely painful and annoying and I'm glad yours is mostly gone. I assume you've talked to a pro shoe fitter about the remnant to see if custom insoles would help?