If they're banned for a reason, then that's obvious. There are other merits that are barred by a ban, such as VIP. If they're banned by choice, theres a chance that temporary+ it's a choice.
If you are on a Gambling block, you can't get all the other gambling merits as well. Therefore, adding this merit will have no effect to those who are already on a block.
Don't know if you were around for the old poker system that was total shit, but this current Poker 2.0 isn't much better.
At least in the old system you could make a password protected room to have a faction and friends poker night and buy in tournaments. The interface is prettier now, but with less functionality and would be overloaded flooding it with people honor bar hunting.
Play wise this wouldn't help either. It would encourage people to stay in hands they should fold just for the super low chance of a royal flush.
Every hand you fold, you are technically giving up ur blinds (in other words, giving money to the other players). So if you just keep folding every single hand, you will be losing money every time you play poker.
Therefore, if a player wants that merit, they should learn how to play and might as well enjoy the thrill of gambling.
Also, this wouldn't flood the tables with a lot of players, because if you don't know how to play, you are going to lose and you will have to leave. Unless of course, you have more money to come back with, just to lose again.
You are way too optimistic here. The lower tables are going to be full of Trolls that go All-In every time pre-flop. Poker skill encourages people to play well. Having a jackpot style honor bar will turn it into the slots where you just accept the cost of each spin, or hand, in this case.
I mean if you want to go all in every hand preflop.... sure.. I'll call you with AK-A10, KQ, QJ (maybe) and pocket pairs, where I would have more than 50% chance of beating your hand, MOST of the time. And at the end of the sesssion, the players who go all in every hand preflop won't come out on top in the long run.
And... if the other player doesn't call, you don't get the Royal Flush.. meaning, you won't get the merit... so you don't really want to be going all in every hand either.
Therefore, only way to get it, like I said, you need to learn how to play poker and, to enjoy and play the game properly for hours... And who knows? You might discover that you might be a poker prodigy xD