> a 3–4 spot induction cooktop and a 2-burner gas cooktop.
Actually, that's probably a reasonable design. Induction is fine for boiling water (or water-like things - soup, sauce, water-with-pasta-in-it, velc), and that's probably the largest single class of cooking tasks. The problem with a induction stove is that you can't do non-boiling stuff at all, but if you have gas burners, that's a nonissue.
Although as tristor notes, it's probably better to have 2 induction and 4 gas than vice versa - if you're running out of burners, using a gas burner where you'd normally use a induction burner is less of a problem than vice versa, and if you aren't, you can just use whichever are better suited to what you're currently doing.
Actually, that's probably a reasonable design. Induction is fine for boiling water (or water-like things - soup, sauce, water-with-pasta-in-it, velc), and that's probably the largest single class of cooking tasks. The problem with a induction stove is that you can't do non-boiling stuff at all, but if you have gas burners, that's a nonissue.
Although as tristor notes, it's probably better to have 2 induction and 4 gas than vice versa - if you're running out of burners, using a gas burner where you'd normally use a induction burner is less of a problem than vice versa, and if you aren't, you can just use whichever are better suited to what you're currently doing.