No. As many problems as the Artificial Human Arc has, objectively speaking, I do ultimately like how it turned out. It's honestly my go to example of a story that is better in spite of its objective inconsistencies because things were more engaging because of those retcons. That said, I want to clarify the Artificial Human arc could have been written the way it was without those inconsistencies if it was planned out, so don't take it as a simple write off on my part. Those are problems I wish weren't there, but they're not ruinous, which I think is an important clarification since a lot of people tend treat all writing problems the same.
In regards to your idea of wanting the Z-fighters to go to Trunks's future to avoid a number of those inconsistencies, it could potentially work, as Cell could have just showed up without having to travel back in time, but I feel you lose the shock of there being a second time machine, which I think would be unfortunate. It would also create problems for the idea of time machine fuel cuz there would most certainly have to be a bit of back and forth.
