D&D: An Optional Initiative System

In an AMA on Reddit, Mike Mearls spoke about an Initiative system he's been using for DnD and ENWorld posted it today.

After looking at it, I have my own thoughts on an optional initiative system:

• A character's Dexterity Modifier is NOT applied to initiative rolls.

• Lowest roll goes first and you count up, it resets each round when new rolls occur.

• Fighters and Rogues roll a d6.

• Other classes that are NOT casting a spell or a cantrip this round roll a d10.

• Other Classes that ARE casting a spell or a cantrip this round roll a d12.

• If you are changing gear gain a +1 to your initiative roll.

• If you are using a bonus action this round gain a +1 to your initiative roll.

• If you are moving this round gain a +1 to your initiative roll.

• If you are using a reach weapon gain a +1 to your initiative roll.

• If you are using a weapon with two-hands  gain a +1 to your initiative roll.

Feedback would be appreciated.