The thing that I forsee is that because of the voucher system, people will stake a lot of SPS prior to the pre-sale. This will have an overall effect on the staking rate of SPS. Secondly, if I want to buy packs in pre-sale, what I would do is to first swap whatever I have in SPS and then buy the packs with SPS and profit from the 10% discount. With reduced liquidity because of staking and increased demand for buying packs, I believe that SPS can appreciate quite a lot during the pre-sale...