Re: Aikido for MMA?
Aikido for three years; BJJ for six weeks.
I also do an MMA class every week.
I easily handle all other beginners, including a few very big, very strong guys, in BJJ; in my first ever class I sparred with a white belt who's trained for three or four years, and submitted him with a kimura.
I rolled with a very experienced, talented, and respected blue belt on Wednesday; he told me my top-game is on a par with someone who's been training for six months.
So does ability in aikido transfer to other martial arts/martial arts in general?
The answer is very obviously: yes.