Hi Denis - as an argument in favour, you would only see this view when you 
select the Hierarchy button (so its not the default) - and by pressing 
hierarchy, I would argue that you want to see a hierarchy of all the classes 
(like you see all the classes in non-hierchy mode) - if there is lots of 
scrolling then that might be a code smell to look into.

As an extra data point - dolphin and visual age both work this way (maybe even 
visual works?) and I never saw it as a problem - which is why I was surprised 
that Pharo is different - however I know you guys often think differently.

Tim

> On 1 Feb 2017, at 13:22, Denis Kudriashov <dionisi...@gmail.com> wrote:
> 
> 
> 2017-01-05 12:11 GMT+01:00 Tim Mackinnon <tim@testit.works 
> <mailto:tim@testit.works>>:
> I finally got a chance to try this change out - and this a super helpful 
> change - thanks so much. (It also taught me where some of the things live in 
> Pharo).
> 
> Why wouldn’t this change be made permanent in the live Pharo? I can’t see any 
> downside and it really helps understand new code.
> 
> I think it is bad idea to replace current hierarchy view. 
> With your solution it can be difficult to see superclasses chain of selected 
> class when it is at the end of subclasses list. It will force user to scroll 
> which is bad. With current approach this problem not exists.
> 
> But new view mode can be extra option accessible somehow from menu.

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