It doesn't feel right to change something that's been a part of Graal for over 10 years, and it ESPECIALLY wouldn't feel right if this was put on iPhone before PC. Overtime you'll adopt new strategies and techniques for sparring.
I'd say if you wanted this the best bet would to implant an event's system with Game Coordinators on iClassic and you could have certain events which allow you to perform such techniques. That's what makes Unholy Nation fun, the events give you unique bonuses instead of simply a sword and shield such as ZombieHunt where you have a gun shooting zombies, CS where you can shoot Nukeshots, Arrows, Fire Arrows, and Fireballs, and Juggernaut where the Juggernaut can charge for a powerful attack.
It's just not right to change sparring and PK, that would be like changing the 2D style of the game into a 3D first person shooter style.