|Maybe This Should Be the Opening Scene of the New Campaign ;)|
This is a tough one for me. Generally speaking, as a DM I prefer to start my campaigns at level 1. It always seems more authentic to me that way. However, my new AD&D 1e campaign, is to some extent, a reboot of my ACKS campaign, as we've lost and gained players in the group since the start of that. PC levels there are around 4 / 5.
I'm thinking of starting the new AD&D 1e campaign at level 2. PCs are less squishy than level 1, but no one has level 2 spells yet. I want them to have some of the feeling of accomplishment for leveling in the ACKS game while still starting the new game at a lower level. Imperfect solution, but most solutions are imperfect.
I'm also thinking of passing on one magic item to each player from the previous campaign. Different world, different setting, but something passed down from distant ancestor who may or may not have crossed over to a different world.
What level do your start your campaigns? Does it make a difference if you are ending one ongoing campaign to start a new one? Does your preference change if you are a player and not the DM?