We have jet packs don't we?
Jetpacks aren't really stable enough to use for this purpose.
I don't know, I kind of like how minecraft makes you work for things. A building laser may destroy a vital part of the games appeal. (no need for scaffolding, careful planning of what to build when and how)
I would just like to mention that EVERY single IC gadget is designed to make your job ("makes you work for things") easier, faster, and more efficient, with a price of course. Electro furnaces? Macerators? Miners? Mining lasers? What do all these do? Make your life easier. Admittedly, these things have quite a large curve of resource requirements, and in the end you work harder for these amenities than you would if you just played vanilla, though the satisfaction of being able to sit back and not have to do anything is great.
It's by no means cheap, a lapotron isn't something you can get right away, and considering it would (likely) require 1m eu's per charge, I hardly find it as ruining the experience, it simply expands the length to which you can improve how efficiently you can go about your minecrafting.