"nostalgic" game mode?

What if Riot did like a nostalgic game mode?

I mean hear me out!

Example:

1. You can only play as the champions that were in that particular season.¹
2. Only can buy/use the items that were available. (No trinkets!)
3. Ward limit lifted, depending on the season.
4. Old map Summoner's Rift was brought back.
5. Reworked champs are reverted.
6. Only old skins could be used.²
7. Summoner Spells reverted.³
8. Old Champion Select used.
9. Old mastery pages.

They could do season 1-4 randomly or just 1-3. I think this would give a good idea to the newer players how the game was played back then. I'm sure many people have thought of this, but I will share my idea anyway! Older players who miss the good old seasons would enjoy it too. I'm sure I missed a few things that would be reverted and brought back, but just a few quick things that came to my mind. ¹ Diana could be played in Season two unlike Zed who was released two days after season four ended. ² Jack of Hearts Twisted Fate, a 2010 skin, could be used compared to Cutpurse Twisted Fate, a 2015 skin, in season two. ³ Flash distance changed back. {{summoner:2}} brought back. Just two examples.