Question on tang & tail width & grinds before I do it

[Substance]

G'day all,
as I anxiously await the posty with my Brunoblade, I have been looking at & planning finishes and scales etc

part of my ideas last week was the reshaping of the tang & tail a bit more,
my theory is this should be OK since the tang could be thinner like a Kamisori razor which only have a thin & fairly straight handle
but then it accrued to me that this could be a hindrance when using it if I go to thin vertically.

So my questions are as follows:
1^st would some of you with a bit more experience in use or making off different 1” straights (than this noob) think this could be a problem in use?
I'm up for both the Pros & Cons of changing the shape

2^nd which of the following shapes do you prefer ( I am leaning towards the top drawing if it is not going to effect it )
I do note: that Bruno has since I drew this last week odd, posted a monkey tail a bit like the smooth centre one but longer I think.

I thank you in advance for any responses received & acknowledge design choices are personal opinions
regards
Substance