Thank you for the response WhiskeyBravo! I'll have to check that out.
For the people new to MMOs or FF for that matter, simply telling them up front what they can and can't meld to an item would be immensely helpful.
Personal example: I purchased a Mind materia IV for a crap load of money thinking I could add it to a Vanya Robe of Healing. I knew nothing about crafting or materia, but knew enough to get the mats I needed to get my robe crafted. I saved up a ton of gil to purchase the Mind materia, just to find out that the materia couldn't be added to my robe. My simple understanding of materia melding was, if an item has a slot, you can add materia in that slot. These hidden stat caps seem silly IMO. I dont mind a stat cap, but knowing up front that the cap exists would be very helpful to know. Why make it hidden?
I hope they make the system of materia melding and item stat caps more transparent and easier to understand.