What you described, as far as mowing goes, applies to any mower, for sure, and several here have attested to the additional power of the BX over a gas mower, which is what I expected. The ground clearance was another issue that came up in the discussion. I was concerned about the PH digger, which you seemed to address, and that sounds good. How has the BX been navigating rough terrain? I have a small creek bed that I cross, and have to maintain. I can see it looks like it might have a lower center of gravity than my tractor, and that is a good thing. There are some areas I mow that the mower runs at fairly steep angles, steep enough that no way would I try my tractor at those angles. I know side angles are not a good thing for tractors, but as a mower it is necessary, in my case. The steep areas are right at my fence line and are narrow enough that one pass cuts them. They are not wide enough to cut across them, like up and down.
I have some areas that I do not cut with the mower, just too steep.
How does the BX do for traction when say minor excavating? I have R1's on the MF1010 but would not want them (if they're even available) on the BX, but I think turf would be a bit too slippery for serious bucket work.
I owned a
BX1500 MMM at one time and it was the most stable on hillsides because it was the smallest and closest to the ground. I mowed across my yard in front of my house with it and now with my F3080 4wd but would/wil not with any B I've owned/own.
This creek you cross made me think B but then you went on to express the need for mountain goat ability which is BX. If your crossing a creek with the MMM off then you gain several more inches of clearance on the BX.
I usually get R/I4s for my Bs and turfs for my BXs. I'd get R/I4s for a tractor with a FEL which most of my BXs didn't have. The
BX2660 and the B25 had/have FEL but my other BXs didn't.
I currently have a
BX25 which is a
BX2360 with the factory installed FEL and BH. It is an excavating giant, I'm building an additional garage on the side of my current garage but my garage is 4'under ground on the upper side where I'm building the addition. I've had to cut the hillside out to make the 16'x26' flat spot and level out the drive into the new garage space. Lots of near bolders have had to be removed with my BX. I've flattened it and laid in 16 tons of gravel which I had to haul in because the truck bringing the gravel got stuck turning around and had to dump his load on up my hill.
Called a Concrete contractor to come give me labor price to pour the garage and drive. He measured, looked around and gave me the price then we man chatted for awhile.

He told me Steve Barlow was "offering" to sell him a used
B21 and had been for a bit of time and that he was going to go on out to Barlows and buy it. The
B21 is a bit bigger with a bit less HP than my
BX25. He said that he was so impressed with what my
BX25 had done that he wanted the
B21 for his work. Asked Steve Barlow Saturday if John A had bought a
B21 from him last week and he said he did and that John A had told him how impressed he was with what my
BX25 had done. John A has been in the Concrete Contracting business for years from small jobs to Commercial Jobs (Wal Marts, Factorys, etc).
So, to answer your question about excavating with a BX, yes but much better and quicker with the BH. I have done most of mine with just the FEL because that's what I had before I got the
BX25 a couple of years ago.