Hi there.

The clog issue is quite controversial, but it can roughly be differentiated as intentional and unintentional. Basically, anything you do that results in a huge leak count is clog. Leaking so huge that the creeps deviate from their usual moving pattern, clumping together and stopping at intervals is clog (roughly). Obviously any type of clog is bad and considered a glitch that needed to be fixed in the first place, but that's a map issue, not an ENT issue. What ENT administrators can do is punish these 'intentional' clog cases, which have to be reviewed one by one. To put it shortly, is it fair to win a game if you leaked more (but your leaks bugged and arrived later than they should have)?
- Yes, building units to delay is a glitch and a punishment should be implemented.
- Building dead value so you delay the units, clogging intentionally should be punished.
- ...
Anything you do to glitch the map can be categorized as unfair, but not all things are punishable and it is up to you and your integrity as a player to decide a course of action. This includes cross building too, but it's just my opinion at this point.
- The upgraded ent unit can cast roots on the boss if you build it in the first row and it will stay there and you will only fight 2 bosses and thus need 2/3 of the value for it. Again, a glitch.
On a sidenote:
"Human relationships are chemical reactions. If you have a reaction then you can never return back to your previous state of being."
As a chemist, I have to disagree, most processes are interchangable and reversable, chemical reactions are functions of state, not path, but you could say because we humans are not rational beings (we only try to be), we tend to differ from laws of nature.

I'm not sure i can provide the links, you might have to browse the forum a bit, but I hope this helped. Have a good one, mate.

Time flies when you're in a coma.