i've been following this for a while. zeppelinrox has been working with the builtin minfree settings and the oom groupings and has come up with some very clever and helpful scripts. Here's the link to the script in the first post. it's a long thread and his implementation has evolved; read the first post to get the idea of what he's doing and the last few pages to catch you up to what's current.
I've found that the balanced or multitasking settings really help GB on the D1 run smoothly; i'd forgotten that the system app screen didn't HAVE to redraw after each app i deleted, and how nice it was to use geniewidget news and NOT have the news widget refresh after returning from each article, because i'd been using Gingerbread so long and they were getting killed by the memory manager and i'd just gotten used to it.
Here's the post inside the thread that originally caught my eye
download script manager from the market and his supercharge v6 script and check it out.