About 4 years ago, there was an abruptly aborted line from Hasbro called BTR ( Built to Rule) and it was, essentially, GIJOE Lego. Same block pattern, fully compatible with Lego, AND featured figures that worked with the Joe figures at the time.
The smaller sets were so-so, but the bigger sets were quite nice.
There were two waves, the second seeing minimal distribution.
For what they were, I thought they were excellent product--a bit on the clunky side of things, but still a LOT of fun to just phutz around with.