My prediction is that it will be seriously detrimental to equip more than the basic cloak to anything less than a proto suit
(I imagine the more advanced ones to have more capacity and/or shorter recharge)
I also speculate that the cloak will decrease charge over time, even walking will decrease the charge faster and there will still be a visual effect which will be lessened on a light suit.

I also speculate that the current scout skills for Min and Gal to change to something like less movement cost for the Min (unless there has been an update I missed I only saw the other races getting a direct cloak skill)

Well the other two do indirectly affect cloaking - Min scout can be all sneaky sneaky staby staby, while the Gal scout will be harder to scan while cloaked (and in general).

We need cloaked Heavies. Could you imagine the horror?

After a close firefight with an enemy squad you and your squad mates are beaten, barely alive. You take the time to recuperate and heal up before moving on. But out of the corner of your eye you see something. The air before you glistens with an uncomfortable malice. The distance warped by this unseen horror, just imagining what lies before you could drive a man to insanity. But before you can get the attention of your squad it's too late. Before you stands the looming mass of a Sentinel wielding Death incarnate itself. You cannot run, you cannot hide, you cannot scream. You are frozen in fear as you hear the roar of the meat grinder. You watch as your squad mates drop dead as if their very souls were ripped from their bodies. Then Death's gaze finally focuses on you, before you can react he takes you into his cold embrace. You then quickly go to the forums to QQ about invisi-Heavies.