So are these like 5e explosive runes where you can set the trigger to be basically anything short of a full IFF AI or is it along the form of "Thing step here? Thing die."?
You could have variable triggers, sure.
Also how long do these things take to plant? On uses do these have to be attached to a fixed object or could they be scribed onto a baseball and lobbed at a foe? About a million more questions
How long they take to make depends on size more than anything else. For comparison, I looked up a random runic circle-y thing on the internet and copied it. Based on that and keeping in mind that the user wouldn't have to constantly look at what they're drawing, about a minute per circle? They do NOT have to be on fixed objects, so you could write them on a baseball. Depending on the complexity of the circle being drawn, you could even have more than one use per circle.
So is this tinkering as in if the cape starts with a gun it will become a +1 gun and then a +2 gun and so on or is it more Dauntless like in that I take a spear and now it's a ranged taser?
It's like Dauntless with a dash of Leet for flavor. The tinker (or probably more accurately enchanter) builds a spear and sure, it'll be a ranged taser or will return to the hand after being throwing or grow longer/shorter or something. The cape can only have one of each object in existence at a time (hence the Leet flavor), but if the object in question is destroyed or the cape decides to take it apart, the next time they build it it will have a stronger effect than previously.
Because it's a more complicated process than just touching something, the power gains will be stronger at first than what we're told Dauntless had. It also has diminishing returns once you really start racking up the levels, but I'm not convinced that Dauntless didn't have the same thing going on, so I'd rate them at approximately the same strength.
Also could it work on Tinker tech/Magitech? And are others able to gain the benefits of what the cape creates?
It… WOULD work on manatech, but remember that the cape has to build whatever object they're enchanting themselves, so they would need a Linker Core to do manatech and therefore would have to be a Deviceless mage (as giving them a Device or Gadgeteer template would burn out this power). Other people can use whatever stuff the cape creates, just keep in mind that if someone borrows his Winged Boots of Flying or whatever, he can't make another pair.
I might link items together by effect rather than strictly what they're made from, so rather than only being able to have one magic spear but bunches of items that let him fly, he has one item that lets him fly and multiple magic spears so long as they all have different effects. I haven't fully decided that one, in part because nobody so far wants an enchanter character.
Can the strengthening stack? Like if we took 100 blasters and stuck them near the guy with Scion's Fuck you beam would the fuck you beam suddenly become as strong as 100* the base boost or is it a 1 weakened cape to 1 strengthened cape?
It stacks A LITTLE. If you had ten enemy capes and three ally capes, you could drain the enemies and give each ally a bigger boost, but it wouldn't be much more than that.
1: Is this cartoon electric blasts that toss lightening around with no ill effects or realistic electrical where a tiny jolt will kill a person and big ones turn air into plasma?
Ever had a static shock, especially when you aren't expecting it? Take that and turn it up to 100. I wouldn't say it will kill people, but it can certainly injure them if you hold it for a while.
3: H-handholding!? That much too lewd! Handholding is something you do after marriage!
You think this is lewd on its face? LOOK AGAIN! This can involve holding hands… with TWO PEOPLE AT THE SAME TIME!