I like RedPower 2 very much. And one of the most nice machines from redpower 2 was frames and frame motors. I tried both replacement: Truss and Redstone In Motion, but they are not the same like RP2. They don`t store block data, and reload blocks(turtles and computers reboot so i need to make shell.run for them and if i want to store variales?) .Truss dont work properly with ComputerCraft turtles(they disapears). Redstone in motion have different mechanics(engine move frames in the opposite direction of the redstone emitting to engine). So, is RP2-like frames in your todo list?

Nope. Don't see what i can do better than any of the replacements out there. Besides, i have way too much still to do with other things.

sadly

Truss will improve, make suggestions/bug requests to fry