Is Technology worth to upgrade? Yes, maybe... I know you can keep all indutry/energy to build medail wonders(Hardcore).
If you want upgrade tech there is my opinion on it. You can ofcourse disagree if you do please tell me why
My Rating 1 - 5 (1=OP,2=nice,3=good,4=meh,5=waste)
3-Infatry: only for Motorized inf(not patro) I buy them a lot so thats why I upgrade them
2-Atillery: my frist general was Gorovov so I like it but it is expensive (industry).
2-Tanks: Why 2? Aliens otherwise 1.
5-Forts: not worth .
5-Ships: who needs them.
1-Patrotroopers max it first but only to LvL6!!
4-Supply: works only if you are in city if you want sit in the city fine but not worth at all.
4-Anti-air: I used it a lot in start of game but right now not at all so it is worh? Maybe for beginners( Do not focus this)
1-Missile: You want this to be lvl 5.
2-Nukes: You need only Atomic bomb to lvl3.
666-Lunch plan: Please just ignore this.
2-Ion cannon: Well if you have all Generals that you need/want then go for it but remeber you cant use it in challanges so Generals > Ion cannon
felt bad as no one replied here, even though Im a wc4 hermit
ships are indeed not important in wc3, but in wc4 their usefulness in everything from speed runs to city defending general attack strategy. With the might of the cruisers comes the deadliness of the submarines, in which good technology and navy generals are a huge advantage. Paratroopers are very helpful no matter wc3 or wc4, plus wc3 has a worse paratrooper spam? If so claiming airport cities fast helps to soothe that down