Possible functionality add (if it doesn't already exist): tab stops like in VS Code Snippets.
Ex: Abbreviation code -
proc means nway missing noprint data={:1};
class {:2};
output out={:3} sum({:4})=;
run;

For each index (":1" for example) a tab or some other key will jump to that spot. This would add additional efficiency when adjusting the abbreviation code to fit the immediate task at hand.