Yeah well bring back a template is going to be an issue caused by the airlines them selfs.
If you read the size restrictions for each carrier they spec them in linear inches. That means that someone can have a long skinny bag and someone else can have a square fat bag and both fit within there rules. So having one template wont work, by there own rules.
And if they change the size rules I'm really going to be pissed, luggage is pricey.
I wish the would stop jerking everyone around with the dam luggage, soda, carryons, and just raise the ticket price. It is what it is, they think we are to stupid to add up all there extra charges. In reality there just pissing everyone off.