I have been playing PVE since console launch and I recently purchased a PC with good specs to play ESO. So I bought ESO (again) for the exclusive purpose to play PTS. After playing for just a month on PTS and live Console I have become crazy better at DPS. The ability to try different gear and try things that play to my strengths without wasting any of my real in game gold/time is unbelievably useful. My dummy and real gameplay have improved dramatically. 85K on a dummy with almost any build is stupid easy for me now and harder dungeons/trials I couldn’t hope to conquer just a month ago have become totally within my skill level. If ZOS could make a smaller environment for sale in the crown store that is similar to PTS you could have a real best seller and people pleaser.
I’m picturing a daedric training portal that you place in your home. When you enter the portal you get access to a merchant and and Iron atronach dummy and maybe a random hard world boss with mechanics. The merchant sells all the stuff you need for 1 gold including respec scrolls, all available gear, potions, and all currently available cosmetics. The Atro would be just as it is now and the world boss could be basically a dummy the hits back but give you some basic DPS numbers. Maybe make it so that 4 people could fight the world boss and give useful feedback for all 3 roles (new feature everyone would want). Obliviously anything you do or buy in the training portal stays in the training portal. This would give console players, content creators, role players, casuals, barbies and everyone else a small place to try everything just like PTS. I believe It would pay for itself a thousand times over, encourage cosmetic sales, and help everyone “GIT GUD”.
TLDR: ZOS should make a small crown store purchasable environment to test stuff similar (but much smaller) to PTS.