The other thing is that while I think the aikidoka [vs. karateka] would have an advantage once inside ...
What do you have in mind?
The reason I posted this was that I also felt that simply adding karate striking techniques to Aikido would be insufficient. It could be very confusing to an opponent to switch from one to the other though
I guarantee that no opponent worth mentioning will give a damn what "style" you are using. Even karate techniques are better then nothing.