Hi,
I like a small kit, but I'm personally happy with the size and handling of the Tiny G series lenses and the smaller of the Sigma i-Series lenses which are in some ways similar. I don't really see significant advantages to going smaller. I wouldn't want to give up features including the aperture ring and on-lens AF/MF, which the Tiny G's and Sigma i-Series have. I acknowledge that it's subjective,
There is also a glaring gap in the Sony range for compact telephoto lenses. They'd never be pancakes, but there are no truly compact telephoto primes - ie, in a FL longer than the 50G. An 85/2.5, 105/2.8 and/or 135/3.5 in the Tiny G series could have been very useful siblings to the three lenses they did announce. Samyang and Sigma partly addressed the gap with their 75/1.8 and 90/2.8, but there's nothing longer. There's also no 135/2.8-3.5, 200/4, 300/4, 400/5.6 or 500-600/8 - all options widely available in the past. And there's no truly compact short tele zoom from Sony or anyone else. Your telephoto choices are limited to fairly substantial zooms or very expensive heavy fast primes. It's like Sony have abandoned the compact telephoto sector.
I'm not seeking small and cheap here - I'm arguing for small and excellent. I live in hope.
Cheers, Rod