The maker skill is removed completely. Professions replace it. Any grade of gems or crystals (beginner, intermediate, advanced) will be worthless. Sell any that you can and just dump the rest. Monster crystals also become worthless because the new recipes use item crystals which are different. So sell any of them that you can too. Hoard bronze and adamantium plates and ore if you can. They are necessary to make Angelic Bless rings and you should be able to make a decent amount when AB recipes start flooding the market.
And I could be mistaken on this one but I believe the drop rate for PoTs gets increased so sell any that you have now for higher profit.
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