First, our Founders never formally addressed “political parties”, was barely on their radar and as much as I admire Washington, his perspective of differing opinions especially considering the pushback he constantly received against the views/actions of Hamilton, were naïve.
Yes, in the very nascent stages of our independence, most Founders “opposed” political parties strictly because their ONLY concern was the laser focused survival of this new nation, which was at this nascent stage, their only and unifying concern. You think they were considering states' rights, which weren't even created, how to pay for the debt they were incurring for the Revolution, where our capital was going to reside, etc.?
That changed almost immediately after Yorktown. Ratification set that stage, most poignantly exemplified by correspondence between Madison and Jefferson.
The fact that Madison, one of Washington’s closest advisors as well as Jefferson his SOS, had such opposing and hostile views to his own, first discovered in Callender’s missives (composed by Madison and Jefferson no less) is testament to Washington’s naivety. Jefferson QUIT as his SOS by the end of 1793 which pretty much formally established political parties, with the disparate views previously established in the Constitution.
To think a “monolithic” perspective could survive was very naïve and to endorse this perspective in the modern age, especially since we have witnessed what happens with monolithic rules as in the former USSR, current Russia, Cuba, China, etc. is incredibly naive. And whose “monolithic” rule wins out in your world? Your party? LOL. Yes, based on some of your responses here, I know how that dictatorial reign of your party would work.
As to how he dealt with traitors, spies and anarchists I recommend you read his dialogue regarding Benedict Arnold, how he handled Major Andre in Tarrytown, how he dealt with deserters from the army and the Whiskey Rebellion of 1794 as just a few examples. He never would have accepted the seditious and traitorous acts and commentary, committed here and abroad, particularly while our military is engaged as they are now, by the likes of Chris Murphy, Walz, Obama, Omar, Talib, Kerry and so many more members of that “party” whose perspective you wished was the ONLY one allowed.