I feel like the old Stealth/Ward mechanics are much more healthier than the current ones

Current stealth mechanics provides absolutely no counterplay, if they are 'Invisible' your hope is to plop a red ward and hope you reflexes are fast enough to outplay them.

Purchasable wards such as green and pink wards (that were not visible to enemies and had a duration) were way much better in my opinion (as they lasted longer than a flimsy Trinket) as well as Oracle's Elixir. Oracle's actually allowed you to outplay those Talon Ult's and Shaco Qs, destroy wards efficiently and we didn't need to have those stealth reworks on Twitch.

Make wards and counter-warding great again.