We @Biconomy have been working on improving the user experience for DApps. We have started out by building a meta-transaction SDK called MEXA that allows DApp developers to pay the transaction fees on behalf of its users. Try out the DEMO.
To integrate MEXA no changes are needed in smart contract code. Mexa can be easily imported from npm and integrated in few lines of code in your client code.
Currently we are live in alpha stage and looking for feedback from developers for our SDK 
Relevant links that will help you get started are mentioned below.
Get Started Docs: https://docs.biconomy.io
Developer Dashboard: https://dashboard.biconomy.io
Medium: https://medium.com/biconomy/the-meta-transaction-flow-ed98cd750ef0
Contact us: https://docs.biconomy.io/comm/contact-us