I do not plan to make that game myself as I am already making a different game, but I made a Spritesheet and Mockup for a possible spiritual sequel codenamed "Word Factory", since I thought the "Word Witch" concept was great but its execution wasn't, and I also thought that a better execution required a different theme that would allow for gameplay that better serves the game's core:

My rough idea is that you'd have the Letters rolling in from the purple conveyor belt at the bottom, and you'd have to place them on the Orange conveyor belt above to spell a word and press the Orange button when you're done with the word.
I made these graphics in minimalistic Pixel Art as I thought the arcade gameplay would complement it perfectly. I also designed the font to be readable at Very fast speeds as best I could.
This factory theme with conveyor belts would allow for a ruleset which could be changed by the players before every match:
- The Blue Button moves the letters on the Purple Conveyor in some way. How exactly can change in different rulesets, e.g..:
- - In rulesets where the letters don't move automatically, the button could reshuffle the entire set, or move away the right-most letter for a different letter which enters from the left-most position
- - In a ruleset where the letters Do move automatically, the button could make the Conveyor move faster or backwards
- Spelling a word on the Orange conveyor could work exactly like in Word Witch, or the orane conveyor could move automatically and you must manually move the letters from the Purple conveyor to the right slots in the right time to complete the word as fast as possible.
- The Player could choose different starting speeds impacting their later progression of the score:
- - At every Speed increase, their Speed Multiplier for their Score will increase by 1
- - If they choose Speed 0, they will be at Speed 0 for the first 10 Words, Speed 1 for the next 10 words, Speed 2 for the next 5 words, and so on.
- - If they choose Speed 1, they will be at Speed 1 for the first 10+10=20 words, Speed 2 for the next 5 words, Speed 3 for the next 5 words, and so on.
- - If they choose Speed 3, they will be at Speed 3 for the first 10+10+5=15 words, Speed 4 for the next 5 words, and Speed 5 for all subsequent words
- - If they choose Speed 4, they will be at Speed 4 for the first 10+10+5+5=30 words, and at Speed 5 for all subsequent words.
- - If they choose Speed 5, they will play the entire match at Speed 5
- To add stakes, I'd suggest adding a rule where wasting letters Removes the Letter's worth of score from the player's Score (A letter counts as wasted when it exits through the right side of the Purple conveyor instead of the Orange conveyor)
- I just came to the idea that the game could have an optional Trash Can where the player could put themselves letters they want to waste.
I know that this is terribly overwhelming, but I suggest starting with an unchangeable ruleset that you think would be the most interesting one. I intentionally left this concept pitch open-ended to improve the flow of better ideas.