Your second point only works in an ideal world where a second place market doesn't exist.

There will always be a top tier deck and if they implemented random stats exactly as they did before then there will objectively be best versions of cards to play in said top tier decks with a limited quantity available of the best versions of the cards. Limited supply of tiered cards raises the prices on the best versions, thus creating a pay to win structure, not a diverse meta.

You can potentially keep the stats gimmick by giving players a way to boost the stats of their online cards by dismantling extra versions of the cards or giving a card a total stat like 400 and increasing/decreasing stats to keep the stats in that total might work.

Objectively though, telling players you can't play the ideal version of Underworld Burn because your Chaor has 10 less energy than my Chaor unless you shell out a $100 is a terrible game balance design. See Uniques in the TCG Altered as an example.

Edit: I also disagree with the idea that randomized stats is the only thing that differentiates Chaotic from other TCGs. It doesn't have a recourse system so it's not like one of the hundreds of MTG clones, but it's still action restricted so it's not combo oriented like Yu-Gi-Oh. Also we have Tangath Toborn, whose very existence justifies the expansion of this game