Short...
FF7 has Slots for Weapons/Armor
Using DoL Materia items gains you Materia slots on Armor/Weapons when your trying to "meld".
Then you Equip your Materia which you either buyed or Sprited.
Can Swap Materia off any equipment with slots without it breaking.
Materia levels up more you use it in battle. Sameway with Spriting. Aka.. AP.
Once Materia reaches AP cap it levels up and stats upgrade. (Materia stats is lowered down to meet that level of armor's cap. Which means if you have a max tier4 Materia on a lv1 Armor it will have same stats as a tier1 Materia unless its changed to another piece of gear thats higher level to suit that Materia
In Detail...
Drop less support with Melding Materia on armor and weapons please. Its a nice option to the game but I don't want it to be a grind/break fest. Its a nice Augment option for armor but this shouldn't be the main focus on Upgrading Armor.
(Edit:Make it Melding 3 Slots the limit. Drop the 100% chance to 65% and then.. 35% then 20%. Instead of Melding Materia on Equipment make it a option to create Materia slots.
HQ equipment will give you 10% bonus to creating slots.
Basically if you fail creating a Materia slot on that piece of equipment the equipment breaks.
(Edit Extra: Failing to create extra slots, any currect Materia equiped on that equipment will be returned back to your bag with currect AP.
Also make a other menu just for Equiping Materia on any piece of armor you have slots for. (You can Level up Materia to upgrade it with AP when you kill mobs that give you exp.)
Drop less Support of Spirting armor and weapons to create random level Materia. Breaking Higher level Armor/Weapons will create better stage Materia but not anything above lv2/3 for right now. Once you Equip the Materia you have to level it up to raise its Stats by feeding it AP. Rarer Materia cant be created this way.
Add tier5 Materia, because of what players already have so they can upgrade there tier4.
Removing Materia on Equipment slots will remove its AP and its level. You will keep the same Materia but it will be just weaker. Noone will be able to sell the best Materia. Just the near best.
Make Equiping Materia and creating Materia slots a Cost DoL Melding Materials.
Make Ra/ex Equipment have Materia slots already set to be used once obtained. Add Materia slot # limitations as you please with any piece.
Also make Spirting Armor create AP for your Materia on your Equipment level up. Less Materia/Equipment with Materia you have equiped when you convert your armor the higher amount of AP will be put into your Materia.
Selling Materia will reset its AP to 0. It will still keep its level but the AP bar will be 0.
Add Materia in any craft as a Material for creating equipment or items.
Add AP gain while crafting and gathering. AP gain depending on EXP Gain at currect level.
Lastly make a DoH Materia class to combine Materia to make combined Materia (Vit+10 Dex+10 etc)
Combining Higher level Materia will have better chance of combining. After combined it will reset to tier1 Materia but will have combined stats. (Vit+3 Dex+3 etc)
Also for players already rewarded by Melding make them have 1 Materia Slot and give back there Materia for all 1st Meldings. For Melding for 2nd and so on give them back there Materia and add ton of AP on there Materia.