Stakenet (XSN) are aiming to fix these issues with their upcoming DEX which utilises Lightning Network and their one click Lightning Swap solution.
The DEX will run straight from their Multi-Currency Lightning Wallet so no need to move your assets anywhere and the entire DEX is hosted on their Masternode Network. All trading fees earned by the DEX are paid back to the Masternode owners running the DEX too. Their Lightning Swap tech means trades are instant so will have the speed of a CEX while ensuring the security of a DEX, they also have built in privacy options like TOR.
Stakenet have 2 plans to ensure liquidity first up is the DEX Aggregator which will provide portals into other DEXs to ensure the best liquidity and rates can be found in one place.
The second which I believe is the killer feature is that due to the nature of their wallet and the Lightning Swap tech they have also built in Cross-Chain payment tech. What this means is that any asset they support can be used as payment for another asset. So for example if a retailer accepts BTC then you can pay that retailer in any asset supported by their Multi-Currency Lightning Wallet and during payment the asset will be instantly converted to BTC for the retailer. This suddenly gives all these assets a great new use case of being used as payments at an ever growing list of retailers worldwide and which project wouldn't want that. As such Stakenet are forming partnerships with assets that they list so that those projects nudge their communities to use Stakenets DEX over any other exchange out there which will provide the liquidity needed for the instant cross-chain swaps.
With Stakenet DEX there is no KYC, no accounts, no geo-blocking, no waiting for deposits, no withdrawal limits, no converting assets into arbitrary tokens, no problems. Just straight P2P trading, instantly without the hassle. They are also working on something they are calling Cold Exchanging, which is trading directly from hardware devices like Trezor and Ledger.
When presented with that why would you use anything else?
Stakenet DEX is just one area they are working on, though it is also near release hence the focus on it but it's defs worth checking out the other stuff they have going on too.
Fee is another big problem aside liquidity. Has the Stakenet able to solve this?
I believe blockchain interoperability will make will make decentralized exchange as as fast and easy to use as Centralized exchange. This is one of the goals of lightening Network.
When this becomes ready, it will be possible to trade cryptocurrency without leaving your wallet while another blockchain or platform provides all the liquidity with cheap fees