It’s not clear what you have and what’s your goal. “I have a block and text…”. Is that an AutoCAD block or an object that looks like a block? I assume it is 2D.
“My collegues to do that must recreate symbols and text, and correct them with correct angle (oblique, rotation , etc).” Should this be interpreted that you want symbols and text to be reoriented so that they appear in an isometric orientation? Are you hoping that AutoCAD can use AI to create a full isometric view from a single 2D, or collection of 2D, views? What “correction” are your colleagues needing to make to symbols and text? Is it that they have a isometric orientation and you want them to be orthogonal to the screen?
The AutoCAD viewing options (e.g., SW Isometric, SE Isometric,…) will give you an isometric view of your 2D (or 3D) geometry. If you want to reorient the geometry to an isometric orientation (and not just the viewing angle) you can use the rotate3d (not 3drotate) command as follows. Rotate3d the geometry, dimensions, text, by +45° or -45° about the Y axis then rotate3d the objects by -35.2644° about the X axis. Note that rotating geometry yields an isometric projection that is about 82% the size of an isometric drawing.
A sample drawing of what you are getting and what you want would be helpful in determining a more efficient workflow.
lee.minardi