Just be patient, there is currently no improvement for Sumo coins, there is still hope to have a reasonable price.
The team will try to get that gap, here many competitors and Sumo coins try to put it better.
You seem not to check our social media? There os more dev work going on than ever:
What to expect in 2018:
Core code rebase
Optimized Lite-Wallet with high-traffic nodes
New electron-based GUI-Wallet
New Sumokoin Web-Wallet
Additional exchanges
New official website
Official pool list
Additional blockexplorers
Mobile wallets
Hm, I don't want to come off as rude, but that is all... well, nothing new. There are other coins which have all that, plus some. I know that in the past, having a coin clone and maintaining it with diligence was enough to keep a project going, but I believe these times are gone.
If you want to stay relevant, you have to innovate. And by innovate, I don't mean making an existing technology marginally better ("faster wallet sync", "nicer looking buttons", "multicoin supported wallets" and stuff), but by building actual new stuff. Take a look at Anoncoin as an example for how an old and somewhat "regular" project can become new and, well, relevant again.