I'll note that I use %%( entries for sunset/sunrise, e.g., %%(diary-sunrise), and for some schedules that need logic that does "shift one day if Monday is a holiday".
That means I will need the %%( functionality to keep working. I suspect I'm not alone. These are some fairly old and stable functions that I'd actually forgotten about until I tried org-super-agenda and noticed that it broke them. (Now fixed). R Horn
