Is it so much to ask for a powerful 13" Escape
It took me a while, but I think you mean escape key, right?
My guess is the 13" MacBook Pro models, including hopefully the non-Touch Bar model, will get this:
Core i5-8350U: Quad-core, 1.7 GHz, with 3.6 GHz Turbo (Kaby Lake Refresh - 8th generation)
Core i7-8650U: Quad-core, 1.9 GHz, with 4.2 GHz Turbo (Kaby Lake Refresh - 8th generation)
https://en.wikipedia.org/wiki/Kaby_Lake#List_of_Kaby_Lake_R_processors_(low/medium_power)
It should be noted though that no Kaby Lake Refresh Y series CPUs exist (yet) for a 12" MacBook update in 2018. Some claim Cannon Lake Y could make an appearance, but others don't believe that, and that Intel and Apple will skip straight to Icy Lake Y quad-core, but not until 2019.
Meanwhile, the question is if they'd actually update the MacBook Air to Skylake. If they do, maybe it'd be something like Skylake i5-6260U and i7-6360U. This would actually keep costs down while still upgrading the speed slightly, and adding partial hardware HEVC decode support. Or else they could just keep the CPUs as Broadwell yet again.
Reducing the price of the MacBook by $100-200 would make it more attractive, but as many have pointed out, it still has a pretty slow CPU (due to being fan-less) and only a single port. And it would still be more expensive than the current MacBook Air, much less one that sees a $100-150 price cut.
As has been pointed out several times in this thread, the current Kaby Lake Y in the MacBook is roughly the same speed as Broadwell U in the MacBook Air.
Core m3-7Y32 and Core i5-7Y54 are roughly in the same ballpark as Core i5-5350U.
Core i7-7Y75 is roughly in the same ballpark as Core i7-5650U.
In Geekbench 4.2, the 2017 Y series in the MacBook actually easily beats the 2015 U series in the MacBook Air.
In Cinebench R15, the 2015 U series in the MacBook Air beats the 2017 Y series in the MacBook, but the scores are within about 6%.