Don't mean to go all Bruce Lee on you here, but the goal should be simply to simplify. Yes you need options, but if one of those options is a spinning back flibberty jibber over head, with a twist to a side kick headstand to a full nelson surplex..... no one is ever going to remember that under pressure
That is my point, but needing a cane does mean that most of the cane applications I see taught are not viable...if you actually need the cane. And I'm speaking from experience here, I've needed one a lot over the last couple years. No one who needs a cane to walk is going to deliver a jumping side kick to someones head, after using the cane for blocks that depend on having 2 working legs to actually pull of the blocks. But a cane can be used, by someone who needs it, for SD..... you just have to show them how...without the side kicks and jumps...and it can be effective.
And let me add, anyone showing that you should use the hook of the cane to pull the attacker closer so you can attack...has never needed a cane and has no idea what it is like to be old. The last thing a person with an infirmity, or an older person should be doing is pulling a younger, stinger attacker towards them.