Thanks for sharing the photos.
It looks pretty good.
Of course you could make improvements, but so could nearly every robot builder. There is always something that could be better. More sensors, more abilities, stronger build, fancier design... It really depends on what you want it to do, and if it meets your expectations. The general rule of thumb, is that after rebuild 2 or 3 (or umpteen as 222doc can testify with his biped), it is much better designed.
The last three summers (I have no idea why it is always in the summer), I have built large Lego technic T-Cranes. The first year, it was a good crane, but by the next year, when I built the second one, I thought, "WOW, last year's was so plain, and had so many bugs". Now I look at the second one and think the same thing. Next year, I will probably do the same for the one I built this last summer. The more times I do it, the more I find bugs with design, possible improvements, and I have more parts to build with.
I'm all for gun control... that's why I use both hands when shooting