When you go commandos which doctrine are you going?
I'd like to play Mobile Assault, because those commandos can spawn from ambient buildings (they are only 3 tho, so its 1 suprise attack and then retreat). The Land mattress can be a pain in the ass of OKW also, since it has more range than the Stuka Su Fuss and for AI you can throw down the White Phosforeus rockets (they do come really late tho).
Tank self repair is also a must to have in my commander load-out, it safes you the need of royal engineers and I always regret it when I take a commander that doesn't have it.