Possibly — but it is not getting any easier to design good languages. Based on the history of recent new languages, I would say that it takes at least 2 years for a dedicated team of smart people to come up with a promising working prototype which may not be very polished yet but is usable. Then many more years to refine rough edges.
The Repl.it initiative is nice as a publicity stunt, but I would be surprised if a practical, novel language resulted from it. People have all kinds of gripes with existing languages in use, but the fact that they remain in use suggests that they are doing something well enough. Improving on that sets the bar higher than what can be done in 30 days.