You hit most of it right on the dot, but I'll elaborate on a few points that you missed.
Red Buff isn't unimportant, this thing is still game changing. 4 min respawn
Other buffs are at 3 min respawn
Small Creep at 75 seconds
Mostly correct, but I'd avoid Ranged AD carries and Supports like the plague. With a few exceptions. (Vayne makes a decent Ranged AD on this map)
This is the part where you are a bit off. Wriggles is recommended, not necessary. Smite is required (or a Cho Gath Ult). That wriggles won't do you any good if you get smite stolen. If your team doesn't have smite, your team cannot safely do dragon without killing the enemy smite holder, which is extremely limiting. It means that if they kill any one of your players, they can do dragon safely, but even if you kill 2 of their players, if the smite holder is alive, you still cannot do dragon.
QFT. Though this only works if you push out and then interfere with the jungler. If you just deny top lane, the jungler can still free farm and gank bot.
Ranged AD are indeed a high risk - high reward I encourage people to play around with in teams, ezreal and trist at least can hop walls frequently and poke well. Though vayne and cait are really the best of them. Traps work soooooo well on the map, and you can net through to dragon while laning top as an escape if your jungler can help cover you. Supports are probably not viable competitively, but I encourage people to try them out in normals cause they work quite well. After all things get to be considered competitively viable after being well tested in normals.
The laning situation is again, introductory, as competitive teams will no doubt have a solid jungler and none of this wishywashyhalfjungle nonsense. If neither team has a jungler, at the very least they can duo top.
Perhaps I do undervalue red buff a bit too much, but it's fairly easy to gank, and most times pink warded, to it seemed too much complication to detract from dragon, which 90% of TT players don't seem to care enough about.
Thank you for this feedback, I really love plat TT players posting in this forum, though I made gold I still have a lot to learn.