Many marksman play top or mid now. They get ganked and die but still get more gold then the enemy marksman who has pro support and never dies or leaves lane.
normal meta would be going bot with a support. In infinity crisis it is not a good idea.
1- XP is halved. Which is same in all moba games. Marksman depend on base hp/stats for burst so it's a big deal in early.
2- Gold is halved. Even if support leaves you all the farm your gold is so much less than laning mid or top.
3- Sustaining through lane is not as effective. You can only carry a ward and it only exists for 3 minutes. After that you or your support have to go back and get a new ward from base. Which will make you vulnerable to 2v1 from sides. Which will make you play safe and ruin your farming.
Also everytime enemy comes from base they will refill potions. Which is a huge deal early.
Potion brush and gang advantage combined is more effective than sustaining through so you have to go get the wards again.
Solution: Fix dividing gold. People should play support w/o gold
most support skills scale pretty good with level so they won't be hit hard by this fix.