That's not a bad idea, but the no backtracking thing would be kind of annoying. What if some techs had upgrade teirs you could get at different times?
Something like
Writing, enables libraries and libraries give +25% reserch
Specialized Writing, 2X the beaker cost of writing, adds +5% to all libraries
Advanced Writing, 3X the cost of writing, +10% research to all libraries
Mass Literecy, 5X the cost of of writing, requires education, +10% to all libraries
So improving a tech line is worthwhile at some point, but when its the most important thing is always in question.
Similarily,
Gunpowder, enables Musketeers (Matchlock)
Advanced Gunpowder, enables Musketeers with +1 base strength (Flintlock)
Or something like that?
Something like
Writing, enables libraries and libraries give +25% reserch
Specialized Writing, 2X the beaker cost of writing, adds +5% to all libraries
Advanced Writing, 3X the cost of writing, +10% research to all libraries
Mass Literecy, 5X the cost of of writing, requires education, +10% to all libraries
So improving a tech line is worthwhile at some point, but when its the most important thing is always in question.
Similarily,
Gunpowder, enables Musketeers (Matchlock)
Advanced Gunpowder, enables Musketeers with +1 base strength (Flintlock)
Or something like that?