re accidents please do check - I'm interested to know what dave thinks.
re: alternatives - do you have them posted? I'll certainly like to give them a go once I've tired of or won this scenario and finished the historical.
re tactics. The other thing I think has helped me is the realisation that first airborne is not strong enough to take and hold the main Arnhem bridge and maintain the supply line to the DZ. The rest follows from there.
Stop here unless you wanna hear my extended thoughts on 1st airborne in arnhem

Therefore it's best to keep it intact until support from XXX corps is available. Still it's not enough to just bunker down I think. As many roads into Arnhem need to be blocked as possible in the right locations - just a single company will cause 2-3 hours delay if not much more which will help immensely elsewhere. Managed well they can withdraw successfully while enemy is reorganising with few casualties. I use my arty liberally to support these roadblocks as a priority over other tasks. With small forces occupied doing that 1st airborne has a considerable superiority in numbers. Aim to stake out units on the perimeter and sweep for axis forces inside. Done well, Kraft can be utterly destroyed and Harder given a good smacking so that by late evening it's possible to divert forces to blocking enemy reinforcements that have overcome the original roadblocks. Speed and a sense of desperation are vital. Rapid movement and fire plus max losses will save lives ammo and energy later when the enemy is forced to attack your well dug in troops. Once there reconstruct your shattered command structure to reduce orders delay and use reinforcements to trap enemy forces pressing your perimeter. As you can see that's got 1st airborne through to day six. Here ends the lecture.