I did at least want to provide the 50 civ dll so that it COULD be played through at least up to the completion of this release - just no longer supported officially. Removing these options would completely screw up even that. Options CAN, however, be safely renamed and re-purposed. So what I was going to do was the next few options I generate will use those slots so that they eventually get worked out of the mod entirely. Other dead options may be equally possible to do this with as well.
'Course I don't know how badly you plan to break things on your end

If it's THAT shattered that we can't even keep playing the 35civ dll game we started here then I could consider just doing a bad option cleanse at that point yes.
Also do wish we had a scrollbar for that options page in the WB! We're getting too many for the screen to handle it.
Interesting. Are you on Size Matters or not? There are also a lot of wonders that affect these costs and could theoretically be reducing them to 0.