Always found mortarpit badly designed (&weak).
Wehr can burst it in 5sec with mg AT rounds or 221 (brace won't save it, 221 can even destroy it thru edge, sneaky or not).
wehr can destroy it by simply building the static howie lefh (which is rentabilized simply by destroying pit, all the free bleed/wipe is bonus). pioFT (in a house next to pit or not) can do the job too. I don't remember seeing a pnzrwerfer shoting at pit but it's not expected, brit won't brace so it could do substantial damage to it.
I think brumbar can nuke thru edge, a sneaky missile and pit or w/e is blown.
Okw can build a single ieig and outrange pit. it won't always lead to destruction but pressure will be there and RE gon have te repair pit, leading to possible RE wipe or bleed. RE will have to stay around pit meaning there will have less mines for him and more for you (yer are lesslikely to be removed).
Pioshrek (in house or not), volk incendary do great vs pit (the more incend u throw, the more damage there is). I don't remember if okw got AT rounds but like previously said, mg at rounds wreck pit).
stuka/cmdr artyes etc work too.
I never play simcity general but brit forward hq is even more vulnerable. cannot brace, got less health (i think). just bombard it or do anything u would for any other empacement. it's yer top priority if it's built.
To me building mortpit is like destroying schwerer HQ, doing it is asking to be raped. Destroying Schwerer HQ is drastically increasing chance to face onetankarmy konig and building pit increase chance to face 221FT which is super strong (moreover vs brit). or have pit destroyed by lefh which will braindead wipe squad in base or on vp when pit is no more).
ukf will have to play around pit to protect it. => less pressure around the map. if pit is far the front then even less pressure (just ignore it then). if it's too advanced then it's reached and big assault can destroy it.
i have less experience with bofors, it cost fuel and will be pressured/destroyed by even simple mortar.
As u are lowgrade, keep in mind that your enemy is not good. There is nothing he can do dat is unbeatable.
Here is a game in which Helping Hans (top10 player) play against simcity:
https://www.youtube.com/watch?v=yO6wQzOTSQg
Here Helping Hans make a tutorial about how destroying sim city:
https://www.youtube.com/watch?v=MkVxsYNab0s
1st. Player to player I respect you due to you approaching in a helpful way/you show your player card.
2nd, honestly most of your feedback is textbook, but not actual. A lot of what your saying does counter yes, but it's same thing as saying "well flank an elephant and you should destroy it" easier said than done
3rd, the amount of micro player A uses vs player B. Makes both "even skilled players" lopsided.
And you point out counters than come with a tier 4 and such, as if the motor pit hasn't wiped units microless since.
4th, and most important. The video with hans actually playing vs sim city. Is the best example on why it's broken,
-Hans is one of the best players, struggling and having to produce high micro to counter little or no micro against a nobody.
-his opponents did not do the usual "sim city" strat, which doesn't involve a bofers. Sim city is multiple Pits supported by fireflys/comets/LMG blobs.
-his teammate did not also chose a doctorine nor play style that helps sim city
-most important, land mattress was not used which counters leigs outright, yet you can see how often Hans lost his.
That was a poor example of the actual sim city which is a problem, the map wasn't even a good map such as crossing in the woods.
Sim city is a 2v2 problem.