Yes. I would like it to be different from other classes.
And I have made suggestions.
The most obvious being back to 3e. Invocations only, but with the playtest Mystic Arcanum.
I’m building an alt warlock of sorts that is focused a little more but could easily be made more general like the warlock and use patrons for subclasses.
The translation to an actual alt warlock would be:
Hex at-will or recharged when your hex target drops. EB class feature like in the UA.
Ritual casting but no spell slots. You still have a spell level, and if you cast a spell via a class feature you cast it at the spell level for your warlock level. Smallish list of spells that gain the ritual tag.
You choose one pact boon at level 1, a second at level 5, and the third at level 11.
You can only have 1 boon active at a time, until 11 when you are able to use 2 at a time, and level 16 you can use all thre all the time. You choose your implements at the end of a long rest.
Each boon has bonus spells that you can cast once per long rest, and a class feature (the cantrips from the UA work)
You can cast a ritual spell without completing it, holding it ready until you need it. Only one at a time, and it takes the full ritual casting time to do so.
At level 2, you gain remnant charges when you gank a hex target, and you start each day with 2. You can use them to increase damage or impose a penalty to a saving throw.
At level 5, you can spend remnant charges equal to your current spell level to create a remnant crystal which can hold a ritual spell for you, and can make a number of remnant crystals equal to proficiency bonus per day.
Invocations increased to hit 13 by level 20, and some of them let you cast a spell 1/day of 6+ level, like in the UA.
Other odds and ends that don’t translate, but that’s the gist.