[5.x]: Matrix in Matrix reaching max input vars quickly

What happened?

I have been testing the "matrix in matrix" solution in Craft 5 for a while now, and I've noticed that I reach the max input vars of 1000 really quickly.

For my test I have a few different entry types and matrix fields:

• Section
• • Column
• • • Image, Text

Creating one section, with 3 columns inside, with one image and text block in each column, so a total of 9 blocks, already hits max input vars.

I might be mistaken, but wasn't the entrification of matrix fields partly to avoid saving huge payloads (neo, supertable), and to offset the saving to each individual entry instead of saving the whole "field"?

Writing something in one text field now turns the whole page blue with "changes" and I get told I have hit max input vars.

I know one can up this limit, and we have it higher in production, but at the rate this is growing atm, we would have to have 50 - 100 000 vars limit for a large page with a lot of content..

Craft CMS version

5 Alpha 11

PHP version

8.2

Operating system and version

MacOS

Database type and version

MariaDB

Image driver and version

No response

Installed plugins and versions

Reproduce the nested Matrix structure described in the issue using Craft 5 Alpha 11, PHP 8.2, and MariaDB, then inspect the save request when the 1,000-input limit is reached. Compare the number of submitted variables with the nested blocks and verify that a large page can be saved without requiring an extreme server limit.