Great thread Alan.
A couple of things off the top of my head. First, the blade guard could be redesigned. Second, make it with a 12" blade. Third, more power. Fourth, redesign the bevel lock to be upfront and do away with the setting knob (the knob for the 0-45, 45-45, 47 settings).
I like the ideas already mentioned of a zero clearance fence and throat, LED light and maybe a digital read out.
I like the Setting knob. As I dont need to look I know when it stops its either on 0 or if I bevel it I know when it stops I am on 45! I hate the Dewalts where it drops past 45 and you have to hold it on 45 and lock it.
My Main improvment I would like to see on the next kapex! Would be the Depth stop! I am a power tool addict! I like using powers tools where ever possible! Notching wood using a chop saw is a very easy and quick way to house timber! BUT the Kapex Depth stop is the worst in its class!
What I would like to see on the Kapex is a better Depth stop the current height stop is way to low if I wanted to house thicker timbers of the top of my head I cant remember but lets say 3''x3'' only 20mm it wont let me it as the depth stop is to low so I end up housing out like half the 3''x3'' waist of time the depth stop is only good 4 housing door casings cus they are thin enough for it.
Another thing I would like to see is a light aswell as a laser still I like the laser but the light would just be to light up the material nothing more no shadow lines just to allow me to see better but not so bright to make it to hard to see the laser of course.
Also the handle I would like a longer trigger after a few cuts I get fed up of gripping the kapex I would like to be able to drop my hand down to the bottom of the handle but still be able to pull the trigger so I can then use my hand to pull the head of the kapex down instead of gripping it tight to pull it down. I understand you can not decrease the size of the opening due to people having larger hands and wearing gloves but increasing the length of the trigger so being able to hold it lower down would solve this.