I like this chart for identifying where my weaknesses are, and to see how balanced my strength and conditioning is.
http://www.crossfitseattle.com/Skill Levels poster.pdf
As for MEBB, CFSB, or 5/3/1, I see a lot of similarities in them all and they are fairly similar in their basic premise. I like elements of each, and there are some elements of each that I don’t prefer.
The advantage of MEBB is that they program Oly and power lifts, but if you add those to CFSB (maybe in place of front squats) or 5/3/1 (maybe do them before deadlifts) that advantage goes away.
The advantage of 5/3/1 or MEBB is that they allow for more recovery, but if you add rest days to CFSB that advantage goes away.
The advantage of CFSB and MEBB is that they have Metcon programmed in, but if you add Metcon to 5/3/1 that advantage goes away.
A big advantage to CFSB is that several members of the community here are doing it, and are able and willing to answer questions as you go along.
If you want to add some elements into your routine that build upon your current weaknesses, go for it, dude. Be smart about it, and keep you ultimate goals in sight and written.
I’m been playing with variations of each of these lately, since strength is one of my current weaknesses. My advice is to just jump in, and try some. See how you feel, and see if your performance increases or decreases. Have fun, and don’t overthink it. I really liked Castro’s statement that all of it is better than sitting on the couch.
Get some!