I have tons of card ideas, but don't want to waste your time. Here's my two favorite ones. (they are somewhat build-around, if you don't like that I have others)
Ice - Code Gate - Deflector
Redirect may not be bypassed.
-> You may rez an unrezzed piece of ICE. If you do, the runner continues the run from that piece of ICE, encountering it immediately. If you don't, trash an installed piece of ICE other than Redirect.
Jinteki - 2 influence
The idea behind this one is that it is incredibly good at "ending the run" or doing worse. but if the runner can force you to use it multiple times, it can absolutely ruin your setup, trashing all your other ICE. Stopping it from being bypassed means that it is better at being used to rush out an agenda early, which also puts it in the situation of being exploited.
Delayed Public Introduction
Asset - Condition
0c: Reveal and host on an installed agenda with at least one more advancement counter on it than its advancement cost. You may not advance it. The runner may not steal it.
Jinteki - 1 influence
I guess I just made this one because I like Unorthodox Predictions, but it could also be quite good with PR, ABT, Breaking News, and other cards that trigger upon agendas being scored. I think it makes those ICE better in a way that introduces an interesting decision of when best to use the agenda.