i agree with al, except id probably have everman at 0, hes got enough per, and his ft is awful, better to chuck up a 3.
i think the offensive distro is probably what could use the most work. you have one player who is a million times better than everyone else, and hes only taking 14 ppg. 20 is the bare minimum for him.
next, you needed to find the players of your mediocre middle pack who were actually better than the others, and give them more of a role. bassler may have sucked on growing, but hes still 77 spd, 64 per, 67 bh. thats solid from behind the arc, with 60 ath and a c+ to go with it. tawney is 60/69/73, with 57 ath and b- to boot as well. both of those guys are solid, i would have had them, and i guess probably george, as your next tier of 3, and had those guys try to take on a pretty solid load. george's load was probably about fine, the other two are probably better IMO. larmon i definitely would 0 out, all his ppg could move to those guards and that would be great. some of those other guys you have down the chart are fine, for filler, but you want to give as much scoring as guys can handle, to the guys up the chart, and leave what's left for the rest. its hard because there are so many so similar in their mediocrity, where offense is concerned.
really, that is the core problem... offense is obviously really important, you need to have some guys who are great, so they can carry most of the load, and your offense will be mostly great. you could afford to lose all the offensive talent off like 3 of your mediocre guys and it really would make your team not even 0.1 points per game worse. just no value in having all those guys who can take some load if you need them to, when you really don't want any of them to be taking much load.
i think you've got it pretty well in your OP. that, and rebounding.. all about diminishing returns. got to make sure you get those 2 scorers per line, 2 rebounders, a pg, and then as much defense as you can... you have one guy with solid passing, and really that's it. i look at teams having 4 abilities, at a high level. offense - you have only 1 great player. defense - you have plenty. rebounding - only 2 good players. guard skills - hard to say exactly because not having great passing is fine for a sg, but your passing affects team fg% and stuff now so its pretty darn important, and you are weak there too. i would rate this team as just decent in 3/4 of those areas. got to spread that talent around, to areas where its needed. the overall talent level of the team, when you add player by player, ignoring roles, is way higher than the actual talent level of the team, when you look at abilities, and that is always going to lead to disappointment. so - yes, you should be disappointed - but no, not a ton you could do other than going back in time and rearranging that talent, although i do think you could have alleviated it a bit by concentrating the offense in the best guys you had. i'd definitely try that for the NT, it almost definitely can't hurt you, although it may not help as much as i'd hope, because you are taking the scoring away from guys who are only slightly more mediocre than some of the ones you are giving it to.
good luck!