I think that's a very tight list. Now I'm in a spot
lol. I didn't mean to talk you out of the morkanaut. It's got great armour and enough
HP to absorb a lot of firepower regardless of target saturation. This list is gonna be much more competitive but if you want the naut, just play it man. (Or woman) fun is the real goal, winning is just a means to that end.
The lobbas are a fantastic choice here. Use it to pin enemy heavy weapon squads. 3 AV14 vehicles are going to be a nightmare to deal with, tau players are gonna gak their pants over it. you've doubled the amount of scoring units in your list so that's gonna help mightily capturing objectives. Be sure to take your koptas in 2 units of one for maximum annoyance.
If you'd think it'd be more fun to do a footslogger list, go with the naut. Hell maybe even two. You have to commit whole heartily to slogging, no half measures like having one trukk. Go all foot, but give them lots of fire support. Tankbustas, lootas, mek gunz. Something to trade shots with them. Go double
CAD, take 3 pain boys, that kind of thing. I'm on a lame iPad but I'll find the vid where SS82 revamps his ork list after going on a rough losing streak, he goes mechanized ultimately, but keeps his morkanaut. That new list is actually on something of a win streak.
Here:
https://m.youtube.com/watch?list=PLpRfWTb1UMqYHckuZeYefW5wVg1AITATN&v=X3EN2rz7xzA
Then go to his channel and check out bat reps 43&44
lol