Good points, vincoof.

As for the shield, I kinda agree with you. The "shield" is so overused, actually you can find it in every combat race. Question: Is it a good idea to create a game without a classic shield? Maybe, yes, if we combine Phantomizer & Invincibler or overthink their idea, we could create something else and more interesting than just a shield. I still like the idea to have a hologram, or a bait activated on the track when picking up the gimmick which replaced the shield. How are the other people here thinking about this?

About Satellite, yeah. Didn't think of the indoor-thing. In case it really has something to do with satellites. As far as I remember zero or Oryx had the idea for that weapon, maybe they can explain how it works exactly.

And for the EMP. It's rather simple, you are sending some kind if "shockwave" from your ship forward or to all directions. Since that shockwave is travelling away from you ship, your own ship is not affected to the EMP. Or, when firing an EMP, it takes about 1 seconds until the actual EMP goes off [like Plasma Ball takes some time to finally get shot in Wipeout] and in the meantime some kind of energy field is building up around your ship blocking the EMP effect for your ship. Could be an awesome graphic effect but I guess also lot's of coding.
As for the EMP effect... Here is where I got the idea from:

An EMP goes off at 02.55