the reason y we remove backdoor restriction:
1) some loser team always use this rules to penalise winning team, which i personally feel "unfair", eg, if a bunch of hero cross tower n kill other side hero, after the task finish, they use "a" command back before tower, and this time if tower shoot the hero, hero will hit back tower automatically. Is is consider backdoor? i think if follow "rules", this is called backdoor.
2) their are some major tournament have remove backdoor restriction, like dotasg, MYM, if not mistaken, CAPL also remove this d.
3) reduce the workload of the marshall tremendoulsy
4) player will feel free to kill, if they can
5) i think a lot of player can counter backdoor easily, they can tp
6) backdoor also 1 of the strategy
7) ver 6 can skip tower to attack, team cannot "backdoor" to the base, they need to follow sequence also, they have no choice
just my 2 cent, ^^
cheers
quite true oso bah... but i dun think backdoor can be counter by tp scroll as i mentioned when 5 hero attack your tower how u can tp to tht tower... -.- but team should counter backdoor by wards gua... but then if WCG rule (tower count) + can backdoor i think the game will be not fun edi... if SMM point system stil acceptable