At present, I have Holy Smoke and 4 toons maxed with skill shards (AG, SSD, Warrior Troll, & Assassin Golden Son for those curious). I quit Soldier Eddie midway as I was getting great returns, but it's only a matter of time before all those precious shards get diverted to Acrid Smoke :/
Anyway, CR is in my go-to Eddie team with HS and Soldier, so I have been leveling his talismans and considering whether I want to invest skill shards as well. There seems to be one major downside: I need 12 more (of 13) to complete him, which will take eons. This is a hard pill to swallow. The upside is that CR seems to be (one of) the most talked about Eddies here, and his usefulness is undisputed. If I stick to the project, I will have enhanced one of the most heavily-relied upon characters in the game.
The other issue seems to be the toons. I am happy with the team(s) I have leveled with shards at present, but to me my best remaining toons do not seem to be worth the investment. Either these 5* characters are not more significant/useful toons than those I have already leveled, or they are the type that require nearly as many shards as CR while not providing the same returns or being as useful.
While I am content to quit while fortune favors me (as in the case of my Soldier Eddie), I am not one to drop 3 or 4 shards into one character and move on to the next. I prefer maximizing those worthy of the investment. So, with that said, would you agree with this project or not (and if not, please state your reasoning/alternate suggestions).
EDIT: in case it helps your assessment or if you missed it, my 5* character roster is in my sig and those not mentioned above have not received skill shards yet,
TIA!