dirty_milos

Adela was a professional photo model, and now she is a flight attendant. We did this photo shoot in March of 2019, I had an idea to picture her at aeronautical museum among aircraft. Fujifilm X-Pro2 with Fujinon XF 35mm f1.4 R.

Thank you. I don't know why this forum won't show images from "Postimages", now there are clickable links at least.

There are lot of good ones here, but the img tags have to be removed to see them.

Some women's volleyball photos I have taken with X-Pro2 and 16-80.

Adela was a professional photo model, and now she is a flight attendant. We did this photo shoot in March of 2019, I had an idea to picture her at aeronautical museum among aircraft. Fujifilm X-Pro2 with Fujinon XF 35mm f1.4 R.

Hi Milos, welcome. I'm too a Leica M user (M7 and M10-R) but I also use the X-Pro2. First, about the firmware updates. You can update straight to v5. Every firmware update contains the full firmware and not just the changed bits.
As for the lens, Fuji has two zoom lenses that might work, but they are both a bit slower in terms of aperture. It's the 55-200 and the 70-300. Both have IOS (the X-Pro2 has not) so that is a benefit. Yet, I believe the 50-140 is the better choice for indoor sports even though the X-Pro2 isn't exactly fast in AF.
Another option might be the long prime lenses. There are two in this category (I won't mention the 200mm): the 80mm macro is very sharp (allows for cropping) and has OIS but is is almost as expensive as the 50-140 and is not easily available as second-hand. The 90mm tele is one of Fuji's best lenses for portraits, is less expensive than the 80mm, but lacks OIS. It focuses very fast though. I loved that lens, but you need to learn to work with it esp. on an X-Pro2. The 50mm f2 is a very nice lens by the way and if the focal length works for you, you can crop by up to 30% (approx. 14-16MP) before quality becomes an issue. 
The OVF of the X-Pro line doesn't work well with lenses longer than 50mm and the EVF of the X-Pro1 and 2 is a TFT-type that doesn't work well in low light and fast action (indoor sports). It has a poor refresh rate and in 'smears' a bit when you move the camera fast. You can however, learn to work with it even though it's not ideal.
As for third-party lenses, I'm not aware of a fast 'long zoom' for X-mount. Tamron announced some lenses for X-mount (so did Sigma) but not in this category as far as I know. Their variable zoom lenses very quickly go to f4.5 or f5.6 once you zoom in. Viltrox and others focus on shorter primes for X-mount.