RPG meandering

So, in our large stack of game plans we may never finish, I've had Spiky looking at the feasibility of trying to do something like an old Baldur's Gate style RPG. Don't get your hopes up, it may never happen.

This game would have a defined set of characters available in your party although you would have some options to tweak them as you leveled up. For various reasons I don't want a mage class. There will be magic, but I'm currently envisioning it as ITEM based and something that everyone can use. This may be a bad idea, as it's making it harder to figure out my character types. Concepts being played with so far:

The Hunter - Ranged-weapon specialist with a mechanical bent. Starts with a rifle (this setting is punky enough for guns, but not handguns) May choose to use bows later because they're more quiet. Can track, pick locks, set and remove traps. Cannot move with stealth, but can hide in position and wait for something to walk up and BOOM headshot.

The Gymnast - This is the one who can sneak and scout without being detected. Can jump over small obstacles, or the heads of enemies, giving her terrain-covering powers no one else has. Is a melee fighter who prefers small, light weapons and speed attacks. Knowledge of anatomy gives her special attacks to temporarily disable enemies as well as damage (trip, hamstring). Can also enter dodge mode and make herself harder to hit.

The Amazon - The strength-based melee fighter with a little bit of beserker. Uses heavier weapons. Can charge at enemies and knock them back. Also has a range of special powers I can't describe because spoilers, but just assume this is your power hitter.

The Cheerleader - This is one of the character types I'm not so clear on. Intent is to be a leader/buffer type character who can boost the powers of her teammates. If this is turn-based, she can pass her action points to others, which is a big deal. If it's not turn-based it's a little more confusing how to make her sufficiently useful. Not sure what her own personal combat powers should look like either. A search suggests there is a cheerleader class in one of the Disgaea games, maybe I should look there.

The Oracle - This was not an original party member, but I was looking at Sinister Design's comments on tactical combat which claimed that four just isn't enough for a party. So this is a 'maybe' character who I'm still having trouble with the usefulness of. It's NOT a wizard, but a Psionics/Divination class. She can Detect stuff. Find traps, spot invisible/stealthy monsters, locate nearest X (monster, rest point, exit?), determine remaining health of enemies, etc. Has a special attack along the lines of True Strike to allow her to do massive damage. Can tag an individual monster and get a bonus against it because she's sensing what it will do next. Can enter Counterattack mode and get a free hit against anything that hits her (predicting the openings they'll leave).

Are these sufficiently differentiated and understandable?