Hello all. I've been writing a system based around dice manipulation and have come up with the following result. Could I please get some feedback around the playability, flow and/or feel of this system? It's a very complex system with a lot of moving parts.

~Attributes~

Attributes represent the pool of dice you are rolling for a given task. You roll your pool and compare the dice result to that of the task Difficulty, every dice equal to or higher than the Difficulty generates a Hit. For most tasks one Hit is enough, but extra Hits can often be spent for extra effects. The average Difficulty is 4.

~Starting Attribute Rating~
All attributes begin at 3 D6. That is to say three six sided dice. Effects that modify Attributes will either add a dice step or add an extra dice. When you increase the dice step you increase the dice from D6 to D8, D8 to D10 and D10 to D12. Attributes cannot be raised above d12. Extra dice begin at d4 unless specified otherwise.

Dice step bonuses are written as 1S and extra dice are written as 1D. Penalties are written as -1S or -1D. These bonuses may be generated by equipment, special abilities, environmental effects and other external or internal sources. There are also static bonuses that simply alter the dice result. These are written as 1/-1.

Skills
Skills are a pool of points that may be spent to boost the result of a dice by 1 per point. This does not modify the dice step or number of dice but is a bonus applied to a dice of your choice. Skill points are replenished at the end of each scenario.

Traits
Traits are narrative abstractions representing character aspects that may provide benefits at narratively useful times. Traits may be activated once per scene and provide a special bonus dice that may be used to replace the results of a dice you have rolled. Traits are written as XDY with X being the number of dice provided and Y being dice rating. A Trait of 2D6, for example, would provide 2 D6, a Trait of 1D10 would provide 1 d10 and one of 3D4 would provide 3 D4. Traits are not able to modified unless an ability specifies it applies to Traits.

Example

Brais Carroway is in a gunfight with a mercenary, he wants to shoot them before they can shoot him.

Brais Carroway has a Speed of 3 D6, Shooting of 9 and Gunslinging Bravo 1D6.

This is a Speed roll using his Shooting Skill and benefitting from his Gunslinging Bravo Trait.

Brais received a mystic blessing which grants him 1D to his Speed Attribute, he would roll 3 D6 and D4 when rolling using Speed. He also has a High Tech Scope which grants 1S to Shoot rolls, he may pick one of his 3 d6 to raise to D8 or increase the D4 to a D6. He elects to bump up the D4 in the hopes of being able to inflict more damage.

Brais rolls his 4d6 Speed rating and generates 1, 2, 1, and 4. He elects to spend 2 points from his Shooting pool to boost the 2 to 4, giving him two Hits and leaving him with 7 Shooting for the rest of the scenario.

He also has the Gunslinging Bravo D6 trait. He rolls a 5 with this bonus dice and uses that to replace a 1. Netting him an additional Hit. As this is a combat roll he may spend the Hits for bonus damage, to activate special abilities or other effects. In this case he chooses to activate Knockback (1Hit, move enemy a short distance) and Stun (Enemy suffers -1S on next roll) to knock the mercenary off balance and allow himself time to move to a better firing position.