Yup- i know what you mean about Slush and their ramp up. Kano's ramp up is way better as you never lose the shares you submitted. At first it feels like you are getting underpaid but once you hit the 5ND, you are rolling along nicely and get sustained payouts for the earlier shares..ie: shift over shift for several shifts. If you happen to leave kano, you will still get payouts for awhile.
In many ways, bitminter is as good a pool or better than kano. Organofcorti's stats show it as being better much of the time. However, with the shorter period for the shares remaining valid for payout, it scares off miners who test it and see that happening. So it will be very hard for Bitminter to attract a ton of miners the same way that kano has over the past 3 months.
Remember these 2 pools were about the same sizer at one time. I coudln't decide which one to go with when i left the "big 3". I decided it based on which one gave me payouts for all my shares. I think that's why many chose kano over bitminter.
Then, as kano grew quickly, it would find blocks more frequently. This decreased the 5ND from 4+ days back in December to about 2 days now. In other words, the ramp up time to when you reached max payouts for all your hashing power deceased a lot. Also, with finding more blocks each day, the variance in payouts decreased a lot. Overall these 3 factors (shorter ramp up to payment for all shares, no shares lost, and lower variance) are giving kano and a strong edge over anyone else. Heck you can rent hash for a day and if the pool doesn't find a block, you will still get something for your submitted shares even a few days later. If you did that on Slush or Bitminter, you could lose all those shares after 2 days if a block isn't found. So kano is lower risk. Correct me if I'm seeing this the wrong way.
My point is that I see a good future for Bitminter...but it won't happen as the pool can't grow. Why? too many miners get a "bad taste in their mouth" during their testing period when they see the pool not find a block for 2 days or so and their shares become worthless after 10 shifts. So they don't stay here. Now in these times, all pools are having "hard luck". So it's not unreasonable for a smaller ppol to go a few days with no block finds. That's pretty much understood by anyone whose been mining for a long time. The problem is when you lose shares you submitted after 10 shifts (~2 days) and the pool takes longer than that to find a block. The longer it takes the more shares you lose. For me that hurts way too much.
I think that's how most miners see it too... and they just don't day anything verbally. They make their statement by not staying at Bitminer.
TLDR:
In short, Bitminter has a world of potential and could become a significant player with at least 10% of the total network hash rate. However, it's reward system scares miners away before any potential growth can be attained. People don't like submitting work, then losing shares that are older than 10 shifts especially during a time when it's harder for any pool to find blocks. No-I'm not a psychologist. I'm just old and have seen how little it takes to upset people. Not getting paid for work is one of those that pushes peoples' buttons faster than anything else.