I believe there were multiple reasons. Merchandising would’ve been one, cynically. Other reasons were likely the height of the actors, and Gatiss/Moffat being fans of the movie Daleks which they remembered as being big and imposing. Making them bolder and bigger (and brighter) was one of their main aims.
I think the darker paint jobs seen in Asylum worked so much better for them, and it’s a shame we didn’t get those from the off. It’s also a shame, in hindsight, we never learnt what each Dalek’s name meant. I recall, in Confidential, Moffat teasing that maybe one day we’d learn what the heck the Eternal did/meant, but alas.
Also a shame we never saw the ‘weapons hatch’ in action. I think we needed that to happen in Victory. Honestly think it would’ve reduced some of the backlash. “Yes, there’s a weird hunchback shape, but it’s because of a weapons hatch and here it is in action!” And then we just never got to see such a concept, and the Paradigms from then on were only ever shot from the front or in amongst a crowd.
Yeah I agree. It felt like backpedalling though, I think. Like the design didn’t go over well so they tried to walk it back a little and reintroduce the bronze Daleks, even though that didn’t feel like the intent from the outset. I’m glad they weren’t dropped entirely though, as we saw them in Series 7 and heard them in Smith’s finale.
Semi-related but not really. Why are many Doctor Who actors tall? What do you mean that Tennant, Smith and Capaldi, and Gillian are 6ft? I only found out about this because I wanted to know the height difference between 12 and Clara.
Most celebrities I personally come across aren’t on the shorter side, including women. I’m always surprised when I find someone who is. Not Doctor Who, but I’m watching another show where, as is typical, the actors and actresses all stand around the same height, but the main character is extremely short (I.e. the avr height for a woman) compared to the others even when she’s in heels. I’ve never seen that contrast before.
But yes, lots of six-footers in the DW universe. You can add Davison, Tom, and Colin to your list.
I mean, I don’t know if you can equate Narvin with Garak, they’re not really that similar. Paging @sircarolyn. Plus, you really just need to listen to Gallifrey.
I’m not the right person to page here, I’m not that familiar with Garak if he’s pathetic, uptight, doggedly loyal, unlearning his xenophobia, and fun to blow up then sure, they’re similar
if he’s pathetic, uptight, doggedly loyal, unlearning his xenophobia, and fun to blow up then sure, they’re similar 
He’s my little meow meow 