I peronally think that if safe standing is going to happen in this country (which i hope it does, as seeing it up at celtic park and in germany in the last couple of years on my excursions), then liverpool, or even hte hillsborough foundation need to be part of the conversation, either liverpool being the first club to plan it or at least give the go ahead on another club to do so.
Purely for ethical reasons
As you say, it was the cages and fences more than the actual standing, and with the amount of safety checks, plans, precautions i very much doubt anything similar would happen if it was to come in