Adding sockets/links and not randomizing

I'd much prefer to see that jewellers and fusings have a chance to add one more socket/link but not completely randomize the amount.

And the difficulty to increase the amount of links or sockets could be exponential.

E.g. if you have an item with 1 sockets you could get a second socket on average for 2-3 jewellers. However if you have a 5 socket item already the chance to get a 6th socket could be like 1:500

And same goes for links. Existing sockets and links shouldn't be altered - only new ones added.

That would make crafting not necessarily more predictable as you can still set teh chance for the 6th socket or link very high. However when you try it, you won't screw up an item that's already good.

It really sucks when you have a great 5L item and try to get it to 6L but end up with no link at all...