Pimpy the dol you have is just a forwarder, we need the Opera channel right?
I added your pack but feeling reluctant to include this in the source menu by default... mainly because I'm almost out of free spots and second because the opera wad is big and should be installed first.
I'll consider adding a new page to source menu later if needed.
Thanks for including the pack - I genuinely feel it will get used
infinitely more simply by being included - i'll do a missing cover, and a source_menu Internet (Bookmarks?) button & full cover as time allows - unless you'd prefer that you did it?
It's not exactly a 'forwarder' - the BootOpera plugin just feeds opera (a.k.a. the internet channel) a web url, and opera loads to that page. Opera is unmodified and functions as it normally would - so it doesn't return to wiiflow on exit, or read the bookmarks from the wiiflow folder, for example.
I hope you consider a couple of things before you settle on whether to include the BootOpera plugin in the source_menu. You are right, of course, to disregard distributing the opera wad yourself, it's big, and region specific. Which leads me to my point-
Of all the plugins, this is
by far the easiest to install, because a user can download and install the requisite files (i.e. the internet channel)
using the wii's own interface and servers.
I personally think a web-page launcher would get more use than some of the more obscure plugins already included in the source_menu, but I appreciate that I made the plugin* because it's something i'll use - so I would say that!
One more thing, it's easier to delete a plugin you don't want than add one you do
p.s. I would always say yes to a new page - it'll add a sense of anticipation

- i've only just realised - does this mean i can edit the 70+ [Button] number limit?!?
p.p.s. Have you considered adding multiple source_menu.inis, to like, a source_menu template folder? I'm thinking all-the-retroarch, sourceflow specials, all-the-handhelds etc...
*with a LOT of direction from wiimpathy
EDIT: Just riffing, like, but if wiiflow could ignore everything after a given character - e.g. *, you could hide page numbers, unused buttons, and instructions behind *'s in the source_menu ini