The way I always kinda wanted to do Pokemon would be kinda along the lines of the Budoukai Tenkaichi series: you control the Pokemon, as long as you're in range you're "locked on" so to speak so you don't necessarily get blindsided, have a jump and/or dodge button, maybe even block, make one or two buttons basic attacks that don't necessarily take energy (one would be quicker to use but not very powerful while the other would hit a little harder but also be slower) and then have two other buttons be "energy" attacks (flamethrower, water gun, suped-up punches/kicks, that kind of stuff), you have a mana bar that drains with each attack and it'll slowly build back up over time with regular attacks (along the lines of Playstation All-Stars). As for the HP I'd want it to be like a Final Fantasy game but toned down where once you're super high leveled you could easily get HP totaling over 1000, maybe 2000 depending on that Pokemon's individual stats
For example, let's say you're using a PS3 controller (I know Pokemon isn't a Playstation game but it's the controller I'm most familiar with so just kinda bare with me) and have just sent Arcanine into battle: X could be jump, Circle could be dodge, Square could be Quick Attack (it's fast and doesn't take energy but only does, say, 10 damage. At least at first), Triangle could be something like Bite (it could do maybe 40 damage and doesn't take energy, but it's slower and easier to interrupt). Then you could have maybe R1 be Flamethrower and depending on how long you use it depends on how much energy is drained from your mana bar and then R2 be something like Fire Fang
That's just a basic example and it's just my thoughts. I'm perfectly fine with the turn based combat, but it does get stale during a really long gaming session and I think this could be a cool idea if approached the right way
