The phrase "a more capable and" is correct and usable in written English.
It can be used when comparing the abilities or qualities of two or more subjects, typically in a context where you are describing improvements or enhancements.
Example: "We are looking for a more capable and efficient solution to our current problem."
Alternatives: "a more skilled and" or "a more proficient and".
Dubois could not have asked for a more capable and understanding biographer.
A more capable and reliable automatic system makes the situation worse.
I couldn't have handed Australia's ultimate individual honour to a more capable and deserving man.
In this way, we aim to expand the reach and equity of quality education, provide personalized teaching, and form a more capable and confident future workforce in India.
Yet another, less discussed factor may be at play: When given a judicious pitch, a more capable (and aesthetically pleasing) camera can meet the crucial "wife acceptance factor".
His willingness to engage in negative campaigning, they said, springs from a conviction — rivals might call it a rationalization — that he is a more capable and principled steward of government than his opponents.
When my wants and needs became as big of a priority to me as everyone else's wants and needs, I became a more capable, compassionate and empowered woman.
By exploring a range of approaches and situations, we will strive for deeper understanding of ourselves and of the context to become a more capable, empathetic and effective leaders.
Here, however, is objective 3b: "Promote a more capable, accountable, and effective government in Afghanistan that serves the Afghan people and can eventually function, especially regarding internal security, with limited international support".
As part of this paper, we introduce a more capable methodology and system as an alternative to current approaches.
Now, the iPad is a more capable device, and Apple wants to capitalize on these differences.
