i think many people (like you, like me ) are waiting for a official Ext-Core 4 ... i dont like JQuery... but i dont need a complete ExtJS 4 /or Touch ...just a clean foundation, the core ... ;-)
any way, many time there i don't see the source ...maybe you can build your own !! ;-)
Yes I would like this to!
I would really like to use the ext4 core as a lightweight javascript library for quick websites.
It's inconvenient to need to remember to change "addClass" to "addCls", among the other differences between the versions.
Also, I like to use the Google CDN, which still has only the Ext Core 3.1 version. I'm sure they'd host Ext Core 4 if it were made officially available.