Yeah, I guess it's a tough one isn't it. Like you say, two per ST holder means everyone else likely misses out.
I get the argument that 'should be ok as ST holders spend the most' etc but as a number of put on here, not everyone can get to every game. It looked like the fairest way of doing it so ST holders at least got their ticket and could sit with mates etc who are also ST holders.
The nirvana is somewhere between this and a free for all (slightly Captain Obvious comment).
It gives us food for thought for the allocations for the FA Cup Final