Very quick look at your spec file:

* Please check if the license tag should "LGPLv2" or "LGPLv2+"
  see:
  https://fedoraproject.org/wiki/Licensing:FAQ?rd=Licensing/FAQ#How_do_I_figure_out_what_version_of_the_GPL.2FLGPL_my_package_is_under.3F

* Basically dependency for packages made from the same srpm
  should be isa specific
  https://fedoraproject.org/wiki/Packaging:Guidelines?rd=Packaging/Guidelines#Requires_2

* Please explain where lots of "Requires (not BuildRequires):
  pkgconfig(foo)" in -devel package comes from
  - Note that if the package contains pkgconfig .pc files, dependency
    for such pkgconfig files are automatically generated on rpmbuild process
    so usually no need to explicitly write them.

   Anyway pkgconfig(foo) is meant for pkgconfig file related dependency
   and currently I don't see such Requries is needed for lxqt-panel-devel
   package

* Please beaware of directory ownership issue
  https://fedoraproject.org/wiki/Packaging:Guidelines?rd=Packaging/Guidelines#File_and_Directory_Ownership
  - Please check the ownership of
    - {_libdir}/lxqt-panel/
  - What owns %{_sysconfdir}/xdg/lxqt/ ?
  - It seems that multiple package owns
    - %{_datadir}/lxqt-qt5
    - %{_includedir}/lxqt
    Please examine which package should own these directories
    and fix files lists properly

* Files under /etc is configuration files and should be marked as
  %config(noreplace)
  http://www.pathname.com/fhs/pub/fhs-2.3.html#ETCHOSTSPECIFICSYSTEMCONFIGURATION
  https://fedoraproject.org/wiki/Packaging:Guidelines?rd=Packaging/Guidelines#Configuration_files

* Why does this package obsoletes gtk version lxpanel?
  It should be parallel installable and this should not obsolete
  lxpanel.

By the way, please specify review request dependency
(i.e. to make this package build, which package should be
 reviewed in advance?) using "Depends On:"

All comments issues fixed in https://heliocastro.fedorapeople.org/lxqt/lxqt-panel-0.8.0-3.fc21.src.rpm

Policy allows multiple packages owns same directory

Depends On: liblxqt

naming: ok

license: ok, but could be ammended to 
License: LGPLv2+

sources: ok
2d2c2251659f285031f65bfb30c741c3  lxqt-panel-0.8.0.tar.xz

macros: ok

scriptlets: ok (n/a)

1.  SHOULD omit
Obsoletes: lxpanel
until an upgrade path/plan is agreed upon

2.  SHOULD omit -devel dependencies:
Requires: pkgconfig(Qt5Widgets)
Requires: pkgconfig(Qt5DBus)
Requires: pkgconfig(Qt5Help)
Requires: pkgconfig(Qt5Xml)
Requires: pkgconfig(Qt5X11Extras)
Requires: pkgconfig(lxqt-qt5)
Requires: pkgconfig(lxqtmount-qt5)
Requires: pkgconfig(lxqt-globalkeys-qt5)
Requires: pkgconfig(lxqt-globalkeys-ui-qt5)
these ought to get detected automatically from included .pc files already

3.  MUST own
%{_libdir}/lxqt-panel/
dir (unless something else owns it?0

4. %files devel
%{_includedir}/lxqt
headers only, no libs?  If so, could consider making this subpkg noarch or simply not ship these at all for now.


Please fix at least the MUST blocker items, and give fresh spec/srpm links

Fixes in:
https://heliocastro.fedorapeople.org/lxqt/lxqt-panel-0.8.0-4.fc21.src.rpm
https://heliocastro.fedorapeople.org/lxqt/lxqt-panel.spec

3 is apparently still not fixed, %files only has:
%{_libdir}/lxqt-panel/*.so

Oops.
Fixed on:
https://heliocastro.fedorapeople.org/lxqt/lxqt-panel-0.8.0-5.fc21.src.rpm
https://heliocastro.fedorapeople.org/lxqt/lxqt-panel.spec

Good, thanks, APPROVED

New Package SCM Request
=======================
Package Name: lxqt-panel
Short Description: Main panel bar for LXQt desktop suite
Upstream URL: http://lxqt.org
Owners: heliocastro rdieter tieugene
Branches: f20 f21 el6 epel7
InitialCC: heliocastro

Git done (by process-git-requests).

imported