This new means of getting True Hearts is a terrible idea. I've come up with 3 options for solutions that will resolve the issue:
1. Simplest, and preferred:
Eliminate the Commendations of Valor entirely. We already have an item which stacks in Ingredient Bags that perfectly fills the proposed purpose for Commendations of Valor. Namely, Tokens of the Twelve.
Make Tokens available as one of the rewards for completing Sagas. Something like 2 Tokens for a Normal completion, 4 for Hard, and 6 for Elite feels about right compared to the effort of getting Tokens in other ways.
Keep HTR Hearts available for 20 Tokens. Make ITR Hearts cost 25 Tokens, and ETR Hearts 40 Tokens. This keeps them in line with the Commendation pricing model already described. (Small reduction in ETR cost, as I don't think they should be more than double the cost of an HTR Heart.) It doesn't really matter if this is through the vendor in the Twelve, or somewhere else.
Not only would this silence objections to the new method of getting Hearts, it would make Sagas more desirable by making their rewards more widely useful, instead of narrowly specific.
If my first suggestion is somehow objectionable, how about making it possible to exchange Tokens for Commendations of Valor? Using the established costs of HTR hearts for comparison, 1 Token should be tradable for 45 Commendations of Valor.
I think this solution is inferior to my 1st solution, as it retains a new, unnecessary item (CoV), and also solution #1 provides a Saga reward that is more widely useful.
3. Alternate Alternative.
If the first 2 solutions are no good, my 3rd idea is to replace Tokens of the Twelve entirely with Commendations of Valor, and make the CoV BTA. Actually, CoV should replace Token fragments.
Everything that currently requires Tokens would now require 100x more CoV than it now requires Tokens. Everything that gives out tokens or fragments would give CoV instead. All existing fragments in peoples' inventories would be converted into CoVs. Whole Tokens would be exchangeable through the Stone of Change for 100 CoV.
Since this conversion would devalue a CoV to about 45% of their current proposed value, Hearts would be re-priced as follows:
2000 CoV for HTR
2600 CoV for ITR
4500 CoV for ETR
Of these 3 solutions, I think #1 is the best and would make the most people happy. #2 is the simplest, and I think an acceptable compromise. #3 is actually slightly ridiculous, but it preserves Turbine's apparent desire to introduce more types of Commendations. It also has the highest potential to break existing parts of the game with new bugs & glitches.