Acceptance rate should have been kept.
Right now there is no way for people to see whether that person accepts answers or not.
I really don't think that this is fair.
A golden rule:
If your answer is fine the community will reward you by upvotes. Accepted answer means the OP used that answer for his solution.
I can see that you have a 25% accept rate on Meta by looking at your profile and counting. Granted, if you had more than 4 questions getting the exact percentage would take some work, but if you really care if a person tends to accept answers you can say "that's not a lot of green" and take whatever action you would take if you saw a low number displayed.
And hey, if that action you would have taken would be to look at their earlier questions and see if they actually have good answers worth accepting before judging them and deciding not to answer, you're already on the right page to do it.