Claudiu, you take too much to heart..No one is getting on your case...You need to be patient as we all are to each other..

Study your VA manual..In the VA, you possess one of the best on board sequencers, and the SMF playback is second to none...So when you ask what is a sequence? Some of us wonder why you do not start digging into the manual and understand what a great instrument you have...You don't need a Motif or any other workstation[even at a $1.200 price]..
If you master this VA, you will have very little that can not be done..

Be patient and try to understand where your elders are coming from,, you will learn a lot if you do...Good Luck.