Reposting something I've said:
I have a level 4 trickster/level 1 fighter in one of my campaigns that is 30hp, only 3 more than hers. Gales is artificially high, wizards dont roll like that. Hed have to roll a 6 on every hit dice and have +3 con to be getting to what he has (almost)
Stealth - Blessing of the trickster = Advantage on stealth, pass without a trace = +10 to your roll. Thats a pretty hefty advantage for anyone.
Disguise self - no modifier needed. The only thing that matters there is an insight check from the other party that needs to beat the DC of your spellcasting ability, wisdom, to see through the illusion.
Deception - Charisma, - you can charm, and can cast guidance to add the D4 (as Disguise Self and charm are not concentration spells) to add to whatever change to the DC is involved with the disguise self. Not being proficient in it is a shame, but I dont think it outweighs the advantages you get from the rest of their toolkit.
There ARE negatives to stealth and all that, but realistically she doesn't need it. Shes either being a face or getting past someone with the rest of the party. I am having a hard time thinking about a time where shes going to go forth and be the stealth hero while everyone waits behind.
The biggest gap is the duplicate that is just a distraction in this. Not being able to disguise self, cast a duplicate, and then cast spells through it changes where she needs to be. Having a duplicate that has mirror image on it is one HECK of a distraction for the enemy that completely wastes their time.
But, without the duplicate, still highly functional and i have used disguise self against the gith and other things to good effect. I just never caught myself going "argh! if only her [stat] was higher!"
if you wanted to do any of those things, you could. Why a cleric would be stealthing around alone, I dont know, but you could. Why a cleric should be the tank, I dont know, but you could. Shes the best at being a cleric - a reasonably armored individual that is there to buff, CC, or heal that shouldn't be put into vulnerable positions in the first place. She can cast and go around a corner and stealth, she can have the item that gives misty step and cast and bamf, she really only needs to get one thing going that is concentration and then can heal as needed, sacred flame otherwise, and end every turn in a safe spot. It sounds like people want to do a lot more with her.
As a person who plays several clerics across several campaigns of different domains - my job is to be the last person to be targeted, my spells are too critical to waste. This game nerfs spell distances, which is unfortunate, but gives powerful tools like stealth, jump, and misty step, plus other stuff to allow you to use her as a full blooded cleric. I think if people want her to be in the middle of everything using inflict wounds - thats a shield, shield of faith, hat +1 dex saves, misty step necklace, and some health potions build.
The only thing to point out is that sacred flame is a canonically garbage cantrip because your save DC is so low early game and you need either ASI or proficiency to start bumping it up to be useful. Its more of a "eh, i got nothing else to do. Neat if it works. Oh nice, after 3 misses it did 1 damage. tight.".
Clerics are very versatile, but you need to set them up to do 1 thing well. They aren't going to be great at everything with 1 gear set and 1 spell set. Depends on what fun is, I guess. Every fight has a long rest after it anyway, currently. Use all the spells you normally wouldnt because youre a smart D&D player and you dont blow all your slots every fight you run into. If people are wanting her to not need any spells or special items and to be close to the group and in the open, then she absolutely needs to be different and you will not get any arguments from me there.
