Jamm
Perhaps you could describe this with more detail, what are you trying to achieve, define "self-coded platform" etc.., because this forum is for a more general audience. Tiddlywiki is a non-trivial Quine which makes me ask is it not already a " self-coded platform ".
Personally I am not a developer but I am a super user/designer, and often things can be done already, without development, javascript or other coding. Developers with their development hammer often think everything is a coding nail. When in fact possibilities already exist be it widget, filters, editions, plugins that are already available. Eric and PMario (to name a few) are so well versed in TiddlyWIki you would be surprised how they can achieve anything, I am striving to be as good as they are, but from the designer perspective.
I consider TiddlyWiki is a platform, it can even generate new wikis, ie be its own software development kit. I am keen for newcomers to contribute their coding skills, but would prefer it be to address gaps rather reinvent something. Just my personal view.
But we are open to all ideas, so please spell yours out a little more, to a larger audience.
Regards
Tones