The big cock up was pushing that 111 area as a singing section 10 years ago because now you've got 1000 or so hardcore singers in there who won't move but are basically lost to the atmosphere as it doesn't spread from there. That was the start of breaking up the singers. The club ballsed up their big chance to rectify this when they opened up SS Level 3. There were a few permutations which would have helped, but the one they chose was the worst option. The singers are now dispersed over three areas and it doesn't really work.
There would be one last opportunity to salvage things, but they won't do it. Change the name of the South Stand Upper Tier to "New Kippax" or something. Keep the season tickets all at £299. For half a season before the implementation market it as the mew singing end, offering existing season ticket holders in that tier the chance to relocate elsewhere for the same price. Put 1894 up at the back of that section, allow banners and flags etc. Make it first come/first served for the rest of the season tickets up there but make it clear there will be standing etc.
Songs would sound louder and would spread from up there quickly round the ground. It's still next to the away fans. If/when it started to work then people would gravitate towards it. And it wold have that "end" feel about it being high, steep and if it was draped with banners.