Spells Combo / A game to look into / Game Saves
I find combing quite fun in games where magic is involved and it may allow for strategies, would it work in elemental? After a combo attempt the caster would be very vulnerable because of the use of his powers or mana, so it would need precautions and probably be used has a final strike strategy and different combing allow for different results, but all quite expensive in power demands. Spells like a freeze or silence, after a meteor, or a self buff for protection just after an atack. Or by combing 3 spells you just get another result.
Next subject, I'd strongly suggest Stardock to look into the game Knights of Honor, if they are not awere of it (never saw citations of it, only Total War). Few know it and is an adorable classic. The many details make the game very fun and rewarding (simple and effective marriage and spy systems being just an exemple) and it is also artistically rich in it's simple or not demanding graphics. The map board is of the same model has elemental will be and it uses a real time gameplay instead of turn based and completly susscceded at that. Most of the players who know it, find it better than Total War, including me with no doubt, and is much alike, with real time field battles has an option but it got a very alive world and very good and fun diplomacy AI. A game to look into too, in my opinion.
Last thing, I'd suggest a system protection to disencourage save-load cheat. Other kind of cheats are hided from player because it really remove many of what a game has to deliver - and can kill the fun fast - but not save-load. FPS games already make systems for that for exemple, with check points and other methods. And also build the game arround the non-usage of it. Games like GTAIV at least have a system that you can only save at home, which miniminizes it. There isn't even an in-game info/warn telling to not use that (for it may remove from the game experience, like they say for multiplayer in some cases), and many may think it's just part of the game and that it is build arround it (most games do allow for as many saves as you want to, don't they?); I think strategy games should protect it's gameplay, it is a genre were gameplay (mostly the decisions you make, right or wrong) are of first importance. Multiplayer don't suffer from it, so it's a singleplayer issue.