I think that be good idea but you could start with maybe 16 nations to give the lower countries a go at it. Ok you may say why should Italy, Hungary, France etc be in it but if you don't enter them the sport won't grow. It would be good to have it as a league meeting with maybe two legs so each has home advantage. The first round you would have the more respected nations like GB, Denmark, Poland etc seeded and drawn against the lower Finland, Hungary etc so that no-one can moan that in the first round they face a top nation. That would also attract crowds and hopfully help the sport in some countires as for example Slovenia v Australia then local fans would go and help the sport there. You would have 7 riders with maybe 2 on the verge just incase of injury etc. Then after the first round go down to the final. I think that the other idea would be good to help young talent and developing speedway countries get noticed. So here like a example of what I mean with the left nation the seeded but the first leg would be away to help the lower nation maybe get a advantage as at home instead of losing 60-20 or something in first leg away. Or if you had enough nations you could do league with promotion relegation with 6 in a league and every month couple of fixtures so there would be about 3-4 divisions with all nations competing to be in the top league of nations