I know that there is able to take

() :: custom block

and

<> :: custom block

but there is no able to take block from define block

it is way faster if user can take block from define

Are you saying that you want to jump to the custom block definition? If so, Scratch 2.0 actually had a way of doing this:

You would just click the “define” option.
And this was suggested if so:
https://scratch.mit.edu/discuss/post/398291/ (closed because it was implemented)
https://scratch.mit.edu/discuss/topic/11132/

How do you know much about scratch?

Umhead22 wrote:

How do you know much about scratch?

I mean because I use it :P
Also, this did confuse me for a second but then I remembered it got removed