My only real complaint...

Try turning all terrain mode on.

Six-wheel drive and then boost up the steepest bits.

Upgrade the relevant parts of the Nomad if you haven't already. It makes a massive difference.

Use the map, pay attention to the contours.

Sensibly timed use of the boost to keep your momentum going is valuable.

With the upgrades you can get over some pretty ridiculous stuff, I almost prefer the unupgraded version since it offers a bit of challenge.

It would be nice if we could still "no-clip" our way there.
Maybe it is possible.

Yep, Nomad when upgraded is awesome! And you get to keep it upgraded if you play NG+ next time.

I'm replaying the original trilogy. I'm in ME1 again, for the 12th time, and the Mako may have a cannon, but I feel it's pretty inferior to the Nomad. I miss the Nomad even when doing the mission to stop the Geth invasion in the Armstrong cluster. You need that cannon, but I would gladly trade it in for the Nomad (and Frostbite). I wish they replaced the Mako with the Hammerhead in ME3, but instead we got Cortez and his blue shuttle. I prefer the blue shuttle and the heartbroken pilot over slogging over terrain to plant stakes.

yeah that's one of the things I like about ME3 not needing to really pilot anything as I preferred the get dropped off do your mission and get picked up approach that ME2 and ME3 had. At least over having the Mako yes we had the Hammerhead but at least in the Hammerhead's case we only use it in a couple of quests so dosen't become that big of a problem. I did prefer the Maklo over the hammer head because at least it takes the enemies quite a few blasts to break the Mako's shielding whereas your dead by the second/third blast in the Hammerhead. And obviously straightaway if you go up against that annoying Geth cannon in Overlord. I did enjoy the exploration it was more that the vehicles were hard to control imo. I will say though that the Nomad is better though not perfect but it's definitely better than the Mako

I use super gun twice, once for the geth invasion described above and the other time for those turrets in Bring Down the Sky.  (Don't use for other turrets.)