One thing on that would be probably to try to limit the number of columns to 3 or 4 to start. My inspiration for suggesting this:

BESM 4th edition needs 3 columns for just about everything. Its a point buy system for everything. You spend points to raise your level in things (stats, attributes, powers, etc). So it would be cost - level - thing in the block.

a lot of other games like Low Level Fantasy and Lowlife 2090 (same system, same publisher) and other similar crunch games have weapons that have things you have to track like to hit bonus, damage, jam rating, concealment rating, ammo tracking, and sometimes more.

I've been making sheets for these two games, and the LL2090 has 5 blocks for each weapon as a section, and LFG needs 4 for each.

It would just look cleaner as a table. You could simulate a table with blocks if you weren't limited to 2 columns of sections, with 2 columns of blocks in each one.

They don't look bad to me, but I showed them to a few friends and they had comments about how blocky and 'unprofessional' they looked. Part of that comes from they're used to how the character sheets for those games are setup, but I have to give them a little bit of credit for it. Doing 2 x 2 sections with 4 blocks, for up to 6 weapons means that weapons take up a whole tab.

If you could do a 4 or 5 column table, you could do it in one block. (personally cutting it to 50% in a single section right now would make it too small, but keeping it 100% only in a section would look nice).

An example from the sheet I've done for LL2090 - https://drive.google.com/file/d/1bxdRfnnB7oROSK4xcDURGgzRUGa2SJ1J/view?usp=sharing

This is a great idea.

I've thought about a Table block a couple of weeks ago, but the main "stopper" for me to add that is mainly "available space"

Because the index cards and character sections aren't extremely wide, tables would be crammed and wouldn't look good.

So this isn't a technical limitation per se, but to move forward with this would think to rethink the user interface