We have a lot of challenges with prospects and also current partners asking for integrations we do not currently have. And we have lost some major partners due to not aligning to their needs.
My experience may be different than what you are looking for, I work at 1-800-Flowers and our challenge is manpower - our dev and web teams can't match the level of needs companywide, and we are more DTC focused so partnerships (where I sit) - our requests are deprioritized.
I actually was on a call today with our tech teams about projects and their list and back-log is massive.
It's a shame because most of our partners asks are not heavy lift but the company doesn't see them as priority.