Regardless of innocence, this sets a dangerous precedent. Impeachment will forever be a broken system and expect every president from here on out to be impeached.
And by the way, the burden of proof is placed on the acuser and they have not brought up sufficient evidence that Trump offered a quid pro quo deal.
What do you mean by "regardless of innocence"? Sounds like you're saying impeachment shouldn't be used even if the president is guilty...
What do you think would be sufficient evidence?