Why don't you just lower the required confirmations for staked coins from 110 to 10?  The only problem I can see is that the blockchain is moving very slowly.  It's not that the wallets are not syncing...they're just showing they're not synced because it's been so long since a block has been generated.  If you can get people's staked coins to confirm quicker they'll be able to restake quicker and generate PoS blocks on a more regular basis.  I think the problem is much simpler than it's being made out to be.