[stnmtn]

Tab notation doesn't provide full time signature information, if you're picking up a piece of music which you've never heard played before

In tablature, imagine one string's line shows ---10-----7--8------11----13. How long do you hold each note? Clearly 7 to 8 is quick, but how quick? Sheet music gives you this exact information.

[shermantanktop]

That's a solved problem. Tab + stave notation, with the stave above and tab below.

[shermantanktop]

Here's an example from the (great) abcjs project:

https://paulrosen.github.io/abcjs/visual/tablature.html