My Tabletop group has been discussing running a game of Mutants and Masterminds in the future, so I thought I should get a head start and attempt to build a character. The character i have in mind is a fairly Strong, Fast and Tough guy with a selective High-Cognition vision. The way that I had imagined this working is that whenever someone makes an attack at my character that they're aware of, they can take a reaction to increase their visual perception range to -1/1000ft, increase their processing time by x1000, gain analytical levels of sight and be able to accurately judge distances for however long they wish. Using the information they gather from this, my character would gain advantage on avoiding attacks from the attacker(s) depending on how well I rolled and/or how many ranks they have. The drawbacks for this are fairly steep; firstly, they would lose all other senses until their next turn (where the power would wear off). Secondly, and this is the most important one, the character would get tunnel vision regarding the attackers, something as small as the guy immediately in front of them in melee range and a maximum of 5 guys relatively close together at long range. As a result, his Parry and Dodge potentially skyrocket versus a select few opponents, but absolutely diminish versus opponents outside their limited field of vision.
I've been referencing the Powers section in the d20 hero SRD, and the things I found in there sort of fit the ideas that I've been working with. While there are the Analytical, Danger Sense, Increased Range and Fast Reaction additions to senses AND I could squeeze my tunnel vision idea under Limited and Unreliable, all of these modifiers are permanent and not reactionary. Moreover, the Deflect power is the closest thing I could find to the defensive buff I was looking for, but it only counts as a substitute for Parry and Dodge, not an additive.
So here is what I am SPECIFICALLY asking people familiar with this system:
Can I make my concept happen through Powers exclusively?
Can I make my concept happen through mixing Powers and Advantages?
Is my concept impossible in this ruleset?