You can already see how many people voted if you really want to right now. The problem is not everyone is going to do that with every app, which means people are going to randomly not bother with apps with low average ratings, regardless of whether it is an actual consensus or just one guy. This puts apps that aren't extremely popular at a disadvantage.
Something you will also have with a like/dislike system - having 2 votes pro and 1 vote contra doesn't make things better here, the app could still be crappy as you can't tell wether zxdunny was voting contra or someone who actually has broader view of the world than just black and white.
It seems to me that the underlying problem is, that people around here a rather rating "lazy" or in rare cases aren't capable of commencing a usefull rating.
Maybe we should install a more rewarding system. Like badges or something, people tend to get crazy in forums when "achivements" can be collected (only hell knows why).
You could add the total number to the second idea.
All in all I suggest a truce, as we both won't move away from your positions. I can see the advantages in your proposal, and I can't deny the flaws of the current rating system, but the advantage we might gain with the new system is not worth the loss of information (at least I would experience).
I'm still very glad that you read my posts. I'm not being cryptic at all (please, point out what you didn't understand and I'll go through it with you). I'm always here to help, my door is always open, etc etc.