Custom number of speed dial/top sites on new page (up to 18 tiles with 3 rows?)

[Mattches]

@teobb,
Thank you for submitting!
Note that this feature is already implemented in Nightly builds:

Improve 'top sites' section on home screen

Hello! Just wanted to drop in and let anyone who may interested know that this feature just landed in Nightly and is targeted for a v1.23.x release on Stable. Those of you with Nightly builds installed can go ahead and play with the new feature now. We also have the following guide for the new feature: