One feature I have not seen discussed is having the ability to rank your game wishlist. Currently it shows in alphabetical order and there are various ways to filter it, but I would like to be able to mark a game as "most wanted" in descending order. If I look at someone's wishlist to purchase a gift for them I would like to know which title they preferred instead of picking a title at random.

How hard do you think this would be to implement?

Don't know how hard it would be to implement, but I think it's a great idea.

Head to the community wishlist and look under features.
If there isn't wish like yours on it already, add it.

It's a valid request, but somehow I don't think it will be implemented. Might be the reason why noone's discussing it, many of us just have given up hope that such suggestions will make any difference.

Thanks. I voted on that instead of creating a very similar request. I had searched the forum but had not searched the Community Wishlist.

Ah! Turns out I already voted for that one ages ago. Q.E.D. :D

Here's another great request that sounds easier to implement but has been ignored so far as well:
Sort Wishlist by price

Do you mean your wishlist? Or the community wishlist? For your wishlist there is the option of assigning priorities. But I don't know whether that option is there natively or whether it came with barefoot's or adalia's extensions.

Community wishlist seems to have been broken for nearly two weeks. Your votes are gonna be eaten by an invisible beast GOG i̶s̶ are keeping in their basement.

Must be the latter, I don't see such an option in "vanilla" GOG.

Ah yes. It comes with Adalia's Fundamentals.

Personal wishlist. There does not appear to be an option to assign priorities though I had never heard of those extensions.

Give them a try. They drastically improve the forum and some other features on this site.

https://www.gog.com/forum/general/adalia_fundamentals_fixing_gog_so_you_dont_have_to/page1

https://www.gog.com/forum/general/barefoot_essentials_2_gogcom_enhancement/page1

Oh yes, would definitely be a good thing. But GOG seems to be breaking even what managed to escape unbroken lately (forum news posts, community wishlist votes, saving GOGmixes, chat for some browsers...), so either a site overhaul is coming for the 10th anniversary now (which seems most likely to cause even worse grief) or it's all just falling apart on its own. Either way, getting it back to working state would be a priority before changes, however desirable (and really, ranking wishlist and also setting priorities, or at least one of the two, should be basic wishlist feature).