Double Signs (Like double chests)

One of the biggest problems with using signs as they are now is you can't put a lot of text on them. This is just a limitation on how readable text on a sign can be at smaller font sizes which would give more space. If someone wants to write out a bunch of text on a wall for example they would either have to awkwardly write down the text so it is read like each sign is a page or the alternative is trying to manually make lines from signs next to it connect in the sentence. 

The solution,

Double signs! 

They work similar to double chests where it is optional for them to connect and shift clicking places an individual sign on a wall. Basically the lines on both sign would connect so if you where writing a sentence starting on sign one line one on the left it would continue next to sign two line one on the right. They would visually show that they connect like signs on walls do now, however, singular signs on walls would lose a pixel or two off the sides of the texture to indicate. It could also be more than just double signs, it could also be triple signs with probably a max of 3-5 cause longer could lead to problems. The only large problem I can think of is UI in the typing menu, however, I think solutions to that could be found by changing the UI just for double or triple signs.