I don't mean my version compared to yours; I mean compared to last time I played this level, which was of course on a much earlier version of Lix. (Either way, I never used the runners; I'm not sure what I'm meant to be doing with them.)
Anyway, we need TM to decide which type of fix he wants to go with Mine can easily be fortified against the latest backroute, by changing the platform with the exit on it to non-steel. But I do think my fix looks "cleaner", as you put it, because I use only large pieces (and one 32x16, an unfortunate necessity, but at least it's better than having to use 2-pixel pieces!)
Well nope, two more backroutes.
I also attached the intended solution to Proxima's version for TM, added a runner for convenience though (they really help a lot, I find the timing in the critical section pretty easy overall).
We probably have a different sense for aesthetics, I find my fix more clean looking as it preserves the long straight lines, and same width everywhere. I also find overlapping terrain pieces (in this case the steel over the big block) a big no-no. The little steel piece in my version isn't exactly nice, but the player doesn't have to spot it to find the solution.
Anyway, I tried to make a version that uses your adaptation of the solution, looks a lot cleaner though and eliminates the backroutes I found. Still has the downside that the first miner and platformer have to be pixel precise. And there might still be backroutes I missed, while the version with the bashers seems to be well tested.