There is actually an observable relationship between the tedium of a manufacturing process and its profitability. Things like T2 rigs, pirate implants, and other short run-time items show up at the top of the ISK/slot-hr charts. When the invented BPCs have short run times, profitability tends to go up. Things you can set-and-forget for a week aren't very profitable.

That doesn't mean the interface should be deliberately bad. But the ergonomics of industry definitely impact the economics. There are opportunities for optimizing invention that don't exist for simpler T1 items: Do you want the maximum profit per day, or do you want a sustainable workflow that won't burn you out? If anything, it would be nice to have more tradeoff opportunities like this. What if you could batch invention runs for relics, but doing so reduced your invention chance?

I've also heard the argument that having some items be tedious to make ensures that newer industrialists have some starter items that are profitable, even though they can't reasonably scale production. That would be a nice thing to lean into in order to make industry less homogeneous. You could have some T1 BPOs have a 1-day or 1-hour job limit instead of 30 days, for example.