I would wish after struggling with tables a lot lately. To have support for colspan and rowspan attribute in code. Would be merge cells from "Parchment" but just to have support in code is enough. Especially when constructing large tables it gets a bit limited to just work in a grid. I tried find a way around it. But the codefunction is a bit limited.
It can do a lot on readability if we get freedom in designing tables for table. I feel make tables then try to come up with best compromise in fitting in the information.
I mean the typical:
<td rowspan="3"> Information </td>