@JayHawkFanToo
It's not about a system's complexity or simplicity. It's about a system's unpredictability.
You can run a very complex system, but if you give me enough time, I can figure out all of the wrinkles and I can still stop your complex system because it's not that unpredictable.
On the other hand, you can run a simple system, but a system that allows a lot of freedom and freelancing, and no matter how much I know about your basic stuff, I can't predict what you're doing because your players may go outside the basic tenets of the set at any moment.
The Hi-Lo is a complex system. It has lots of options. It's a very viable offense. But it's not like there aren't coaches all across the country that know and understand the Hi-Lo and haven't schemed up ways to stop it. The key then is to add some variations, or allow some variation that otherwise you don't normally have.
For example, Perry is a very skilled player. We should take advantage of that by allowing Perry to freelance on the perimeter more. Put Perry on the perimeter while you send one of our smaller guys inside and run the Hi-Lo with Perry high and Selden low. Make the defense do things they haven't necessarily practiced.
Run a basic pin down every now and then (something we almost never do. Screen for the high post with a shooter, then run a pick and roll with the shooter and the ball handler. It's all about options and about creating defensive confusion.
If Self is running a system that is so complex that players cannot learn it within a season, his system is too complex for college. At every school, your rotation turns over basically every season because even without OAD's, you have players graduating, players coming in, transfers, etc. You will have 2-3 new guys almost every year no matter where you are. If your system is so complicated that you can't get contributions from those guys, you're doing it wrong. This isn't the NBA, where you have the chance to keep your core together for 2-4 years at a time. This is college. No player will be in your system for more than 5 years.
Look at a school like Wichita State. They don't have OADs. Here are the WSU rotations for the last five years (averaging double figure minutes playing in at least half the games, or over 20 minutes in less than half):
14-15: Baker, Van Vleet, Cotton, Carter, Morris, Wessel, Brown, Kelly
13-14: Early, Baker, Van Vleet, Cotton, Carter, Lufile, Wiggins, Coleby, Wessel
12-13: Early, Hall, Armstead, Baker, Williams, Cotton, Wiggins, Van Vleet, White, Orukpe
11-12: Ragland, Stutz, Murry, Smith, Kyles, Hall, Williams
10-11: Durley, Murry, Kyles, Stutz, Ragland, Smith, Blair, Hatch, Ellis, Williams
Every year except one, WSU introduced at least 3 new guys into the rotation. And this is without any OAD's! And with Cotton and Carter graduating this year, they will probably introduce a couple new faces to the rotation again next year. If the system is too complex to learn in a year, you will constantly be wasting years because guys need to be able to come in and contributeon some level as freshmen/ first year players.