You guys realise you have a 100% slow spell right ?
Elem is the best 1v1 and siege character.
You said it youself. elem is the best class to output damage without much risk.
the only way to kill a elem is via Crit by stunning her.
Give her mouvement speed and keep her 100% slow spell, you will outrun everyone without any problem, except class that cannot be slowed.
I totally agree on the fact your choice of uniques should reflect your power, if you want to follow players, do like all other class and use uniques with mouvement speed.
A class with a heavy kit as elem cannot catch up with other class which is the only way for 90% of class to survive elem, run.
On teamfight, you shine with alot more then your damage.
The only problem elem encounter is the bomba debuff, that should be a spell, but bring that a spell and there would be absolutly no counter to elem, if you add MS on top, you would need to nerf her damage by half just to balance the effect it would have on fights.
Quick reminder of when Eclipse and Ancient first came out, elem could 2 tap any player, you can still kill most of class without damage uniques, which any other class cant.
Teamfight are about TEAM, stop think your damage matter on the balance, each character bring something strong to the table and combining those effects are the way to win.