Why you should need LMIA for extra points? Because LMIA proves that you're truly worth those extra points, to be honest! If your employer isn't able to do LMIA for you, then in very simple terms it means they're not willing sponsor your visa, which means you don't get extra points.
If they start awarding BONUS points for every other thing you mentioned, you'd only be at a disadvantage again because bonus points will get awarded to everyone in the pool, which means cut-off score will increase accordingly.
Plus to an extent it seems that you'd like them to have a special system for candidates you, which isn't practically possible. You have a decent job, but there could also be people who don't have a good job but are working for Canadian company, CIC cannot make special rules to award you extra points but not to the other guy! However, they have LMIA for those qualified for extra points!
You also have to keep in mind, however tough Canadian immigration system may feel, it is one of the easiest immigration system if we compare it with those of US, UK and AUS IMHO!
One thing I couldn't understand is if you've been in Canada for 16 years, how did you fail to get into one of the FSWP?
However, you are wasting your time here, you've got 448 points which is a good score, you'll most likely get an ITA in next couple of draws!