Dragon Ore is the most obvious choice from Bestmengqin's blog

You may even suggest quest items. You don't need stuff like Mobilising Armies Reward :grindteeth. I am not a fan of RuneScape Gold that Minigame. I have 80 Defence and 81 Attack. I also have 88 Strength, 77 Ranged and 70 Prayer, if it helps for armour availability. I'm currently on P2P and I will continue to remain so for as long time as I can see.

They should not raise the skills beyond 120. It's just speculation. Jagex stated they believe that Dungeoneering will be increased to 120 because it couldn't be accommodated in 99 levels and that they don't plan to raise the limit for other abilities. 

Everyone is wondering when other skills will rise to 120. I was initially skeptical of the idea but realized that there are a lot of skills that are becoming more readily available and, therefore, it could be possible to raise the level of skill to 120. Below, I will outline some skills that might or might not be raised.

Smithing. Dragon Ore is the most obvious choice. Jagex has suggested that Dragon Ore could be released. When asked about it, they didn’t give a straight answer however they did say that it could not be able to have a happy ending. It's possible that this was a reference towards the Dragonkin (but I'm going off-topic). At the moment, dragon material is very scarce. Why is that? It's not because it's weak. I wear Rune and would like full Dragon, even though I could still wear Barrows.

It is not used except for certain weapons or the boots. This is due to the fact that Jagex has taken so long to release all of 2007 RS Items their products (and do they ever release everything?) ) newer armor has been released, such as Barrows and we now have Bandos gear that doesn't degrade. The price would be lower when Dragon could be made smithable, which would make it more popular.