I wasn't aware of the icon. I agree that the overlay is rather meaningless, and a lot of people tab out during load-in anyways. I'm happy that I could purchase some content that was formerly LE because they've ended up being some of my favourite skins, but it was unfair for Riot to advertise them as Limited which was a promise they eventually reneged on. I know that if I had purchased a skin in that situation I would have wanted something more than a lackluster background, an icon I personally don't like, and some RP (okay, I'd probably be happy with the RP refund), but sadly, I don't think Riot will do anything else.
In the fall of 2014, Ququroon (Riot employee) had this to say (slightly tangential and also very long)
As you've said, we did create three traditional skins a while back. In the past, we used Traditional skins as a way of allowing players to represent the older merits of a character that we may have glazed over during the creation process. We weren't always confident in what we were shipping, and in extreme cases, necessitated a traditional skin to execute on them in a way they should have been done. This is shown to an extreme in the case of Karma's fans, something that we know we could have done better.
The team has been doing updates for two years or so now, and we have a bit more moxie as to how this whole rodeo goes. We feel we're able to better respect the old, while pushing the bar as hard as we can. We didn't up and change Sion from an undead to a frozen warrior. He's still the same exact fantasy he was before, just executed in a way that he was originally meant to be.
If the team as it is now existed in the past, there are mistakes that we wouldn't have repeated. Karma wouldn't have lacked her fans. Trundle would have better enveloped the 'leper jesus' he was so affectionately known for. Sejuani would have just realized that a bikini wasn't appropriate snow wear. These are things that could be fixed in the future, but we prefer to continue moving forward, as there are still a large amount of characters that need some love coughpoppycoughevecough.
Essentially, we don't feel like traditional skins are the correct answer- the only way to show our love for older content. We still push for constant and continuous improvement in our updates, but we want to do so in a way that best shows respect for older content as a whole package. Well... our current line of thinking is that if we do it correctly and give them respect, we won't need to create a Traditional skin at all. When we make any mega changes, it would still fall in line with who the character is. We can never be 100%, but hopefully we're still getting an A.
While this is clearly a different topic, I think it encapsulates Riot's view on this sort of thing. If they make a mistake, whether it be through an unpopular rework, hated lore retcons, or something such as how they handled LE skins, they want to continue moving forward and move on. This is why I personally believe that there are going to be no further rewards for LE skin owners. While I don't agree with Riot's actions, I understand and respect what they're trying to say and do.
Here is the post where they announce Limited skins coming back and compensation for those that already own them.
Something that I do agree with is their reasoning to bring back Limited skins- about skins being about expression and fun rather than exclusivity- but I think that they could have treated Limited skin owners much better than they did. After the backlash, they acted by their M.O.- move forward and on.
Tiered icons and special emotes are both cool ideas. I actually think that tiered icons indicating how many you owned would be better replaced with an icon relating to the LE skin you own. So if you had Silent Night Sona, you would get an icon to do with that. Maybe a holiday-decorated etwahl or a cute chibi of Silent Night Sona. If you had more LE skins you would get more icons, and they would tie in with the skin. Ultimately, I don't think they'll be implementing anything extra like that for LE skin owners. And I think that you may realize that too.
All I can say is that I'm sorry you were treated unfairly, and I sincerely hope that you are able to find closure, whether it be through any future actions of Riot or yourself.