Cav staying power is an issue. That should be solved with a patch. Of course this is only true for some units. Leaving cavalry engaged with swordman, or heavy infantry will usually result in a loss as there are far more of them than cavalry.

With some of the points you raise Rothe, then I think it will work well.

And Jagger.

Can I make a suggestion. Form your cav on YOUR left flank and attach the enemies right flank. Shields are on the left arm of units so missile and cav units should be more effective out there.

You did it the other way around in your example.