Point I was making is that ST holders could hardly use their own seat if they brought a few mates along for a more high profile game in the assumption that other ST holders would be doing likewise. I wasn't exactly meaning it would be a major problem in a stand the size of the JH.
Personally I think that this idea should be introduced alongside the status quo STs, as an alternative rather than as a replacement. Perhaps this scheme would be more manageable without issuing a designated seat to the purchaser . Give the punters the choice between an open 18 match book and the standard ST package as it is today.
I'm all for more imaginative and varied methods of admission such as this idea, early bird schemes, an open 10 game voucher book, "club" tickets incorporating season ticket & occasional hospitality, concessions for unemployed etc.
What we need is more of the positive/radical thinking that got the under 16s for free introduced. Just about any change to the status quo is open to abuse and with those doubts the idea may just be discarded without further thought. I'm sure with a bit of imaginative thinking those obstacles can be overcome.