Despite being able to do so in Anytype, even greater control over block size could be nice.
e.g. no space between blocks which you can currently only do so with CSS.
If width can be controlled even further (with no block space as well), it would be possible to mimic vertical input / top-to-down texts, as an alternative to top-to-down RTL, even though the input process might not be as neat and smooth. It will also needs to support more blocks in the same row though.
Currently if I force the blocks together, the texts will be smushed together and block could disappear.