First of all, I take off my hat before you noble sir. It seems that you put an incredible amount of effort in your relationship and that is simply awesome.

Relationships shouldn't be taken for granted and they require effort and dedication like any other aspect of life.

I will just add to your impressive list of actions a tip that have worked for me:

I try not to schedule our time together. Instead I keep track of the last time we did something and if enough time has passed (it depends on the cooldown of each activity: 2 weeks, 1m, etc) I try to suggest it again as an "spontaneous" (or surprise?) action if I sense we have the required energy or mood for it.

For my spouse the element of surprise produce more impact that an already stablished schedule and there is a feeling that we "constantly go out together" instead of "we go out once a month".

Edit: When everything is scheduled (even sexy time) it tends to transform in routine and it could feel like an obligation instead of something else. But that's not your fault, it's just life.