Well, that is where many go wrong with it, it is a default UI, and some things don't have to be there unless a specific tool is applied because the average player doesn't use many of the specific demands people have. Blizzard is most likely going to make the map resizeable in the future but there are other things with higher priority as well - I guess you could call it a curse at relying on add-ons for so long, so a company taking steps to FINALLY update their UI, then any stage is better than going backward.