So my suggestion is to add this feature back. And you could set this turtorial in the same menu as where you can join games. Like here:
View attachment 148949
Plus, going through the turtorial is an achievement, but it's gone so impossible to gain.
Instead of adding the same tutorial back, which in my opinion was not that helpful; Lacking a lot of things to teach; Like the matter of 5x5 & 3x3 spots, which towers are actually useful against certain enemies and how necessary talking to your team really is -- Instead of adding the same old tutorial back, I suggest to remake it and add the new one instead. Which teaches more advanced things of Tower Defence.
It could be in levels, like, example;
Tower Defence Tutorial 1; Touring the game (Quick lookup on the things that are shown on you in the old TD tutorial, your castle, where the troops come from etc)
TD Tutorial 2; Troops and Towers (You place an archery to hold zombies like they did in the old tuto)
TD Tutorial 3; Gold mine and troop upgrading (Learning to spend your XP well)
TD Tutorial 4; Few facts about Towers, and what do they do
And TD Tutorial 5, which could be a testing mode to use all of the stuff you've learned from previous tutorials - You could put your defence in test and see what's good (Including few tip popups like pointing out how necessary teamwork is, how useful mage is against invisible spiders etc)
I as well think that the people learn better if they
see what's happening; So if some of the tutorials have already placed some defence for you it could light a light bulb in people head that "this actually seems to work against this"
Adding a Tuto for TD is a
need if asked my perspective of the thing, absolutely
+1 for the idea but I think they just forgot to bring it back, at least I hope they didn't completely wipe it out..