That was easily solved both in JA2 and Xenonauts by adding interrupts. Open X-Com has the same features. Moreover in JA2 1.13 you still can do that and AI can do that, but it doesn’t matter as it’s not as exaggerate as it was in X-Com. I mean, this was a well know exploit, of course people thought on how to fix it and did fix it. It’s hard to imagine how someone would go for a complete redesign of the whole system just because one specific exploit exist.