I like this too, it’s my biggest PKM hurdle currently. The .ODS option would be nice for more complete formula support - it seems hard to do that in a CSV… though CSVs should also be supported. The recent Markdown table editor is great for simple things, and I’d love if there were an easy way to make the table expand beyond the regular narrow text wrapping since tables tend to be wider than text. I also wish that a solution for this could have individual cells and rows/columns/selections linkable from within markdown notes and even transcludable via e.g. Markdown table for selection and text for a single cell. Maybe that’s doable with ODS, probably harder with CSV.
The Obsidian Roadmap does list ‘Databases’ as a planned feature: Obsidian Roadmap - Obsidian. I just hope its storage format is portable and usable in place outside Obsidian like Markdown.