I have been doing some serious thinking about some the force field mods out there and I really don't like the idea of putting a huge force bubble all around my house(makes lag impossible for servers). so how about this? you can add strength to every block inside an area useing a "force block hardener" or "integrity field generator", now all blocks inside an area require a higher tool teir to break them. example, a dirt block would need a stone shovel to brake, redstone ore takes a diamond pick, obsidian takes a irdidium diamond drill. or if you put enough transformer upgrades and the block is already hard enough with out the hardener machine,no tool can break it.
= dynamite remote
"structual integrity field generator" or "SIF generator"
now as my imagineation says, makeing a block of pure force energy requires insane amounts of power so, how about small field generators limit 3x3x1 only thing you can set is distance force block are from the generators face useing upgrades.
"small force field gerator" 
one very annoying thing that I have found with force fields or other trouble some things is how can you shut the dumb thing off after you get locked out of your house by a force field? redstone and a lever? no you cant reach it cause there is a field in your way. well how about building a remote to control the power going to it. simply link it to your device or splitter cable like you would your teleporter, then right click to turn your machine on or off. similar to the dynamote remote.
"remote controller"
. 