My understanding is that there is a loophole that allows a new STA site to be used with 1/4 power. If you would like, ask me in a PM who their consultant was and what station it was. And it certainly could run as a nondirectional AUX while a new CP site was developed. WIND has a full-time AUX at the WYLL Day site more than 30 miles away. It just has to keep the AUX 0.5 mV/m within the 0.5 mV/m contour of the licensed facility. The Night would be more restrictive than WIND. Look at the WIND AUX APP at CDBS. A new modest LIC facility, like a near linear dogleg 3 tower for Night, would take much less land than a cardioid broadside multiplicative 2 X 3 array. The Ratchet Rule is on the way out, and works in mysterious unpredictable ways in some cases.
It's based on the present LIC site, even if it has been demolished. At least two of the four stations which were Class III-A that are now 50 kW Night were heavily ratcheted. They just had to move the TL. Now you don't even have to put an NIF over 80% of the COL, so the 10% reduction would be less problematic in that sense. To put a NIF contour over all of Indianapolis today would probably be impossible anyway.
WIND AUX APP for WYLL Day site.