I also thought that IS was not a factor in driving layups, but it is. DR helps you get open/uncontested. IF the opponent/opponent team has high enough pressure rating, SB and to a lesser extent ID will make driving layups miss. I understand the idea you don'T need IS for driving layups, I experimented with it. It's just not true. I am moving towards building a 10+ SB and OD for all positions team (nowhere near the goal right now). I think if you can do that, if you can have all your ODs in the teens and you can have all your SBs (guards too) over 10...I think you will stop more driving layups and/or prevent them from happening.
The USA offsite has a lot of analysis about what skills are used to determine the success of the various type of shots, both offensively and defensively, and contested vs. uncontested. Based on wozzvt's number crunching, in the most general terms, IS doesn't increase your chance of making a contested drive (it does, however, help on uncontested ones, so maybe I should have phrased what I said differently).
And I'm certain you'll enjoy the 10OD across the board. I can't speak to the SB part of that, but the OD is quite nice.
When IS loses to the opponent ID and pressure, the team will shoot outside more. IF this is what you want anyway, maybe not a bad strategy. In my experience though teams that are limited in offensive options don't do well overall, they take more rushed and sloppy shots IMO. I think the quality of opportunites reduces each time one is 'passed up'...or somethign along those lines in the GE. Obviously the rate of this is probably relevant to the strategy used. So far people have seen only high paced offenses do well, motion and LI.
IN real basketball high paced offences will give up easy buckets to the opponent, there is a defensive liability. In BB it seems this doesn't really happen (no connection between your defence and offence, all half-court calculations, not full court) so what is the benefit of slowing down your offence? For the way most teams and players are built, for now, it seems the faster paced offences are dominate. For these offences atleast I think you suffer when your team is not diverse scoring wise.
As far as offensively, I'm going to admit I have no clue - the player on my team with the highest JS shoots barely 41% on open jumpers and 56% when contested over the last two seasons, which makes no sense to me at all. But for me at least, slowing the tempo and thereby reducing the number of possessions for each team makes the effects of turnovers increase, and since my team commits the fewest turnovers and causes the most in the league, that's a pretty decent advantage. Generally speaking, I want to get 20 points or more and hold my opponents to under 20 in each quarter - and if that happens all four quarters of course I win.
Rarely does it actually work out like that, and I'll have stretches where points just don't come and other stretches where one of the outside shooters lights it up and the points pile on.