At least sc2 has many more playable mods, most are unaccesible because of the “prestige” mechanics but at least there’s variety and a lot of TD variations that can be played alone.
I haven’t played cba since the definitive version launched and I won’t join any game due to fear of being kicked out, I hate how elitist this community has becomed.
You just need s good intersection blueprint to make trains work, after i found that i became adicted to expand the train network.