I think Gold Exec is pretty good... First Class arrivals and departure lounges. Any class check-in. First in the queue for upgrades. Retained seating on certain routes. Guaranteed seat reservation with 48hrs notice. Priority Baggage Reclaim. Reserved parking at major airports etc. etc.
What more do you think they should offer?
The one really good thing about Premier is that BA take a very dim view of Premier's travelling in Euro/World Traveller.
Most Premier's tend to but Full-Fare Club or First anyway, but if you don't BA will almost certainly upgrade you.
At the end of the day, there are thousands of Gold Card holders - if you talk to BA staff most will tell you that they afford them no special priveledge. However, there are VERY few Premier's, and they do really look after you, you get the full VIP treatment and nothing is too much trouble.
MERRY FLYER