Thats really not fair, you guys either need to go 100% segwit, or have it based on who finds the blocks. If I'm directing over 30GH to activate segwit on Litecoin and progress Litecoin as a whole, and one of the blocks I find on your pool don't signal, that goes agains everything I am doing for the Litecoin (and yes I get that is proportional, but with variance it DOES matter). I have found 4 blocks for you guys in the past day. You need to get your pool onboard with 100% segwit, and the 1% that don't want it can switch to antpool.
You say that this is not fair because the variance is not the same as it would be in a solo mining situation. Drawing this conclusion actually requires you to make assumptions about the algorithm used by the pool to decide when (not) to signal, but for the sake of simplicity let's suppose that you are right, and that our system does result in lower variance for all its users. If anything, I would say that such a system increases fairness, as luck becomes less of a factor. But let's say that you disagree, and that your idea of fairness requires higher variance. Now, consider what would happen if this pool started signaling with 100% of its blocks, as you suggest: the users who do not want to signal would simply move to a non-signaling pool such as LTC1BTC, and the effective variance of their contribution would be even lower. For the remaining 99% of the pool, on the other hand, variance would remain practically the same.
There is also another important element to consider here, which has not been mentioned yet: the 75% goal needs to be reached over an 8064-block period. That is a lot of blocks, which significantly lessens the impact of variance.
You need to get your pool onboard with 100% segwit, and the 1% that don't want it can switch to antpool. At this point 1% is 25% of what is needed to activate segwit.
I think you're confusing percentages of pool hash rate with percentages relative to the whole network. The pool miners voting "No" have about 2.5 GH/s, and that's less than 0.1% of the network's hash rate. The 75% threshold that would trigger a SegWit lock-in is currently about 6% away in terms of blocks mined since Batpool started signaling, and 6% of the network means about 170 GH/s. That is, the gap that needs to be filled is 68 times as large as the fraction of pool users who are voting "No".