Yeah, I had an idea... so here it is...

A game where dungeons are randomly generated using card items...
Using a "Flame" card generates a fire-theme dungeon... a "Frost" card, ice... an "Ocean" card, water... with drowning hazards... a "Sand" card, a dungeon with a desert theme...

Of course monsters will vary, but their powers should ideally scale with the player's... so basically, if the player levels up, all monsters level up...

That said, this is all I have right now... I guess it is better nothing...

That sounds great... :-)

We can have grotto-like areas like Dragon Quest IX, as post-game areas... beat the final boss, dozens of side quests get unlocked with grotto cards as rewards... and stronger palette swaps (with minor alterations, such as a normal bat enemy with a palette swap that has four bladed wings)...

In fact, all palette swaps should have modifications... a falcon, with a black-winged falcon with blue flames... :-b

Also... a monster coliseum where monsters battle each other, and you can bet currency on who will win... like in DQ3...
(Of course, it should be late-game to avoid getting the currency limit too early...)

Maybe even a class system like Final Fantasy... though with the Tactics' sort of requirements (master 3 abilities of Class A to unlock Class D, for example) instead of being tied to crystals...

(Incidentally, that final stone in LS that turns red...? That text is not applicable to Newerth, but rather the planet Phierce... :-b )