My Helminth Abilities suggestion

[Lazarow]

BAsically we know warframe abilities have ranks which start from 0 and go to 3 I think. Since Helminth is available at MR8 they start with the ability at rank 0, at MR10 its rank 1 at MR 15 its rank 2 and MR 20 its rank 3(maxed) so we have some limitation on the time spent in the game where the more experienced players get the best abilities. This also rewards progression with mastery rank and doesnt allow new players instant access to the best version of the ability via helminth

[Cobalt313]

I'm pretty sure Helminth-infused abilities will scale with the Warframe's rank just like their native abilities.

[Gashabae]

Use this Wiki chart as a reference...

Quote

Ability Ranking

 

Warframe / Archwing Rank	Ability and Rank
	1  Ability	2  Ability	3  Ability	4  Ability
Unranked	Unranked	Locked	Locked	Locked
3	Unranked	Unranked	Locked	Locked
5	Unranked	Unranked	Unranked	Locked
7	Rank 1	Unranked	Unranked	Locked
10	Rank 1	Unranked	Unranked	Unranked
12	Rank 1	Rank 1	Unranked	Unranked
14	Rank 2	Rank 1	Unranked	Unranked
16	Rank 2	Rank 1	Rank 1	Unranked
18	Rank 3	Rank 1	Rank 1	Unranked
20	Rank 3	Rank 1	Rank 1	Rank 1
22	Rank 3	Rank 2	Rank 1	Rank 1
24	Rank 3	Rank 2	Rank 2	Rank 1
25	Rank 3	Rank 2	Rank 2	Rank 2
27	Rank 3	Rank 3	Rank 2	Rank 2
28	Rank 3	Rank 3	Rank 3	Rank 2
30	Rank 3	Rank 3	Rank 3	Rank 3

I'd assume the helminth ability would rank up at the same Warframe Rank as the native ability it replaces as Cobalt pointed out.

So a helminth ability placed in ability slot 2 would unlock at Warframe Rank 3 and reach Ability Rank 1 at Warframe Rank 12. The ranks would change depending on the ability slot the helminth ability is placed in.

This just seems like the simplest way for DE to ship the helminth system.