Code review comment for lp:~kdub/mir/RFC-surface-arrangements

> Specifying top-left locations of surfaces seems like a simplistic layout rule.
> We should consider the existing solution domain of layout managers and, at
> least /consider/, allowing the specification of anchors, insets, fills,
> weights, etc.

I'm not saying we can't do something adequate for now and evolve a more complex solution as needed, but that the current proposal is too specific to facilitate that evolution.