Appcake rules allow only 1 request per month. If the app is not available here, it requires cracker to purchase it. So, it makes sense to limit it to 1.
But, in case of app already available, the cracker doesn't need to buy it again. So requesting newer versions should be kept separate. However, in order to prevent spamming, this too can be limited.
I think we should have a discussion on this. What are your views?