The older LBM system will create the older css float-based layouts. If you are building a new page I would strongly suggest using the Harmony system for the page framework. It is based on the modern flexbox css and is a lot more efficient and allows for greater flexibility and management. I would use the QGM system to add rows/columns or row/column groups into any of the HMY sections as needed.
Okay but will you add components like Layout Builder Components?
I really want to add components like auto-create footer listings, menus(horiz/vert),buttonize an image or text, multi picker per column which can be either a color, image or video, and add animation effects to that too.
Or is it possible if I just use LBM as like the Main Container just so I can use those LBM features?