The part I is interesting, and I am waiting for the part II. However, to increase liquidity, I think that key thing should be considered is how to attract crypto enthusiasts to DEXes. By now, they tend to prefer centralized exchanges, rather than DEXes. They have some reasons to think that centralized exchanges can give them better experience, better security, and better supports. Furthermore, fees on DEXes usually high if traders don't own coins of DEXes. such as for dex run on Bitshares network, fees of withdrawals will be cheaper if traders own Bitshares and pay their fees via Bitshares. I meant, building up DEXes more attractive, cheaper fees will help them increase liquidity indirectly for the long run.
That is exactly what weidex has. AS far as I know they do have their own coin WDX which is same tokon for its transaction fee on the exchange. But I'm not sure if it will really attract traders to stick in the weidex exchange. Increasing liquidity is always an obstruction to the progress of every DEX. Bitshares is one of the oldest DEX I've used but its not as friendly as it looks and up to these days its volume still is less than a Million USD.