I would like to use \footcite primarily when citing, but every now and then I want to refer to a reference as part of a sentence. These in-text references would ideally be formatted like Ref. [2,4-6,8], i.e. refer to an index in the numbered bibliography. (Please see below if reading this did not make much sense.)
Also, in the same way, I want to be able to do both in-text citations and footnote citations within footnotes; the latter then would then just create a new, subsequent footnote.
Currently, what I have is this:
\documentclass[12pt,english,a4paper]{article}
\usepackage[english]{babel}
\usepackage[
backend=biber,
citestyle=verbose,
bibstyle=verbose,
sorting=nyvt,
isbn=false,
url=false,
maxcitenames=10,
maxbibnames=100
]{biblatex}
\addbibresource{bibliography.bib}
\DeclareNameAlias{sortname}{last-first}
\renewbibmacro{in:}{}
\usepackage{fnpct}
\usepackage[multiple]{footmisc}
\AdaptNoteOpt{\footcite}{\multfootcite}
\usepackage{filecontents}
\begin{filecontents*}{bibliography.bib}
@article{A,
author = {Alpha, Amber},
title = {Title},
publisher = {Publisher},
year = {2014},
}
@article{B,
author = {Beta, Bryan},
title = {Title2},
publisher = {Publisher2},
year = {2015},
}
@article{G,
author = {Gamma, Gina},
title = {Title3},
publisher = {Publisher3},
year = {2016},
}
@article{D,
author = {Delta, Daniel},
title = {Title4},
publisher = {Publisher4},
year = {2017},
}
\end{filecontents*}
\begin{document}
While some\footcite{A}\footcite{B} argue X, Ref. \textcite{G} argues Y.%
\footnote{However, Z\footcite{D}\footcite{A} is has to be considered as an alternative,
even though Ref. \textcite{B}\textcite{G} dismiss this possibility.%
\footnote{A nested footnote.}}
\printbibliography
\end{document}
The result I get is this:

Not only do the citations not work the way I intended, but also the nested citation is not showing up. While footnotes-in-footnotes may be a bit off-topic, I hope the solution does not exhibit the same problem for footcites-in-footnotes.
What I would like to achieve is something like this:

I'm using LuaLaTex with TeX Live 2013, in the way it comes with Ubuntu 14.04.
I'd very much appreciate any hints. I'm rather new to LaTeX and BibLaTeX in particular, so I hope this is not something I overlooked when reading the documentation. Also, please let me know in case my question is unclear.
\footnote{lorem \footnote{ipsum}}. For the inner footnote you would need a new\footnoteA(or some\footnotemark/\footnotetextcombination). Forbiblatexthis could be automated. – moewe Apr 18 '15 at 05:40\footnotewith arabic numbers and\footnoteAwhich can be nested inside a\footnotewith alphabetic counters). – moewe Apr 18 '15 at 05:55