Look up fibre types and adaptation to training, and then think about the above point. All things being even, who would be the better soccer team: a team comprised entirely of endurance runners, or a team comprised entirely of sprinters? A VERY stupid question, but I’m trying to illustrate my point as simply as possible.
Don’t focus too much on endurance training for your sport.
OK, I gave you an ENTIRE off season of properly progressed tempo/speed/weight sessions. The question is: have you tried a SINGLE session yet? Or are you still talking in hypotheticals? Have you done an entire week of any of the sessions I sent you? How do you feel?
When you can answer these questions, come back and post again. Until then - less time on the computer writing hypothetical situations, and more time on the field/ in the weight room training. THEN, post your results and ask for feedback.
If you don’t feel what I gave you (or what others are suggesting) is challenging enough, I am more that willing to tell you how to adapt it (and I am being incredibly generous with my time, AS ARE OTHERS - notice how asbury and Nik haven’t posted in a while).
Otherwise, continue to pull bits and pieces from other sites on the internet and try to put the mishmash together YOURSELF.
Read lots (seek the best info available as you are doing). Train hard. Learn from your results.
However, points 2 and 3 are the most important.
I’m not trying to be a dick - but ‘how does this sound?’ versus ‘this is how I feel from the workouts that were suggested’ are two totally different statements/questions. 
Considering that soccer is made of short sprints with run/jogs in between, made me wonder if i could design a session that mimicks all aspects of the game. A soccer game itself is both aerobically demanding, and trains/requires speed and agilty… so with that in mind i was wondering if the following session would be good to do once/week on a high cns day (ie same day as weights)… ps i have two speed/weights days and two tempo days… this session will go on a third weights day:
start with plyos: 3x10 bounding, 3x10 lateral jumps
then…
*sprints are done at full speed
10m sprint, stop, walk a few steps then run 30m at 75%. rest for 5-10 seconds.
repeat this 5 times, them rest for an additional 30 seconds.
20m sprint, slow down to a slow jog for 10 seconds, then do the following at 75 %: run 50m, rest 10s, run 100 rest 25s, run 150… rest 30 s and repeat 3x then rest for 40 more seconds
30m sprint, slow down to a slow jog for 10 seconds, then do the following at 75%: run 50m, rest 10s, run 100 rest 25s, run 150 rest 40 seconds… repeat 3x then rest for 45 more seconds
zig zag agilty drill (run quickly to a cone stop and sprint the other way… two cones) slow down to a jog for 10 seconds, then do the following at 75%: run 30 rest 10s, run 50 rest 15 s, run 100 rest 25 seconds… repeat 4x
No.
Speed can not be developed in a fatigued state. Therefore it would be pointless to do sprint, jog, sprint, jog sessions.
If you want specific conditioning why don’t you play the game or do drills of some sort?
“The game itself provides specific work. Individual qualities are enhanced in the circumstances that best suit that componant- not by simulating a game setting (if that was the way to go, then you would simply eliminate the off-season and keep playing the game all the time).” (CF)
theres no way for me to play at this point (it’s the winter and its to late to sign up for indoor soccer)