You have to download Ethereum blockchain to user their service and it's like 100 times the size of ours. We had an issue with Mac sync that was fixed in the recent build.

As for the UI... calling it "horrible" doesn't really tell me anything. We have a wizard, help boxes, tons of things including tutorial videos, templates etc.

What does it need fancy graphics or something? Should it sing to you? I mean in reality people use microsoft word and it doesn't have 3d animations and cater to every graphical need.

There is a difference between UX and UI. Our markets use a table but that's needed for when you change from Sales to Coins for Cash for example or when you switch to auctions. Each category changes the feel of the markets and the columns on the table.

We can get around sync but at the cost of your security and the security of the blockchain. I'm not sure we need that liability. However, it is a good idea and it's considered something to tackle. In BitHalo I don't make users download the chain. The problem is altcoins don't have access to things like API requests for unspent transactions. On chainz they make you get an API key so we need our own block explorer which requires multiple servers so users can know there is know their inputs and values are accurate. This is peoples money we are talking about, it's not a trivial thing.