Basic Plugin for integrating Kongregate's Leaderboard. This plugin supports C2 and C3 runtimes so you can add it to any of your projects. Check out my other HTM...
I find that requesting Kong to invest on a plugin may be difficult since they already provide their API documentation for implementations, so going further may not be suitable for them. But asking is always an option.
And I think Construct is not interested on developing more HTML5 monetization methods, they are letting developers and companies build all the integrations they need through Construct API, which by the way, having IAP's or admob-like plugins for construct are subject to the policies of the ad network, which in many cases require you to have at least 1 million plays per month... quiet high for solodevs.
yea I see your point. Well if you could develop a solution like this for the Construct community I'm confident people like myself would definitely want something like this for sure because this community needs a means to develop web based games with account / IAP saving because making games that need to get millions of play is not sustainable. A well made web rpg wouldn't need that many people playing monthly to be viable as long as IAP options and account data could be saved for each unique player.
Requiring an account through Kong or others isn't a significant barrier because they already have a large user base and if we do our jobs right as game developers, players will see what we're doing and be willing to make an account to play a free to play game.