Shit man.........with today's technology the only blocks and limits are the ones you can put on yourself. Like saying you don't do this or never will try that. Like seriously......there are too many loops to manipulate and get shit out the way for a person that has limited themselves to only starting ideas from scratch..........too many midi files and people around the corner who are good at playing the keys to limit yourself as a sample based producer only.
We can't have the same limited mind of the people with only guitar skills or bass skills or just good on the mpc skills. It's impossible....unless you limit yourself like them...only difference is they couldn't help it......so the creative ones out of that bunch found new ways of doing things with what they had....which are now part of your everyday routine.....like how delays and loops work......image what the person who was limited had to go through to do what you can do by just dragging a mouse and tapping a tempo.....or hell just visually lining up your loop on the grid by it's snare hits..